Plato
Greek · Philosophy · Ethics · Rhetoric · Oration
37 works · 150,105 aligned sentences
ὁ δὲ ἀνεξέταστος βίος οὐ βιωτὸς ἀνθρώπῳ.
The unexamined life is not worth living for a human being.
Apologia 38a
Alcibiades I
This work is a philosophical dialogue that explores the nature of "knowing oneself" and the "virtue" required of a political leader, through a conversation between the philosopher Socrates and the young, ambitious Athenian Alcibiades. As Alcibiades, harboring grand ambitions of global dominance, prepares to enter politics, Socrates begins to question him about the sources of his knowledge. As the dialogue progresses, Alcibiades is forced to realize his complete ignorance regarding "justice" and "utility," confronting his own state of "double ignorance." Socrates further explains that Alcibiades' true rivals are the kings of Sparta and Persia, and that rigorous self-discipline is indispensable. Through an examination of the Delphic maxim "Know thyself," they agree that the true self is not the body but the "soul," and that to know itself, the soul must look at its best part—wisdom and the divine—as a mirror. Ultimately, Alcibiades becomes convinced that those who lead the state must possess the virtues of the soul (justice and temperance), and he resolves to follow Socrates and dedicate himself to self-improvement.
Philosophy21 chunks · §103-104–§134-1354,819 aligned sentencesRead →Alcibiades II
This work is a dialogue between Socrates and the young Alcibiades concerning the proper way to pray to the gods and the importance of the "knowledge of the best." As Alcibiades is on his way to offer prayers, Socrates stops him to point out the danger of praying for things without knowing whether they are truly beneficial. Through historical examples and poetic quotations, Socrates demonstrates that possessing specialized skills or vast knowledge without the knowledge of the best (what is truly advantageous) can lead individuals and states to ruin. He emphasizes that the gods value the justice of the soul and moderate prayers over lavish sacrifices. Ultimately, Alcibiades agrees to postpone his prayers and sacrifices until he acquires the correct knowledge to distinguish good from bad, ending the dialogue by presenting Socrates with a wreath of gratitude.
Philosophy8 chunks · §138-139–§150-1511,287 aligned sentencesRead →Apology
This work records the defense of the philosopher Socrates before an Athenian court, where he faces charges of not believing in the city's gods and corrupting the youth. Socrates addresses the long-standing prejudices against him, explaining that his philosophical mission stems from the Delphic oracle's declaration that no one is wiser than he, which led him to search for true wisdom. In the court, he interrogates his primary accuser, Meletus, exposing the logical contradictions in the accusations and arguing that his questioning of citizens is a divine mission essential to Athens. Even after being found guilty, Socrates refuses to beg for mercy or abandon his philosophical principles, famously proposing instead that he deserves state honors. Following his death sentence, he calmly contemplates death as either a dreamless sleep or a journey to converse with ancient sages, concluding that whether life or death is better is known only to the gods.
Philosophy19 chunks · §17-18–§41-422,006 aligned sentencesRead →Charmides
This work is a philosophical dialogue by Plato that explores the nature of "temperance" (sophrosyne), one of the key virtues of the soul. Socrates, having just returned from the military campaign at Potidaea, engages in a discussion at a gymnasium in Athens with the beautiful young Charmides and his cousin Critias. The dialogue begins when Socrates introduces temperance as a "charm" to cure Charmides' headache, leading to an inquiry into its definition. After Charmides' suggestions of "quietness" and "modesty" are refuted, Critias joins the debate, defining temperance as "knowing oneself" and "the knowledge of knowledge." Socrates, however, critically examines the possibility and utility of such self-referential knowledge, questioning how it can benefit human life. Ultimately, they realize that what brings happiness is not merely "knowledge of knowledge," but specifically "the knowledge of good and evil," leaving the definition of temperance unresolved, though Charmides and Critias resolve to continue learning from Socrates.
Philosophy18 chunks · §153-154–§175-1762,134 aligned sentencesRead →Clitophon
This work depicts a dialogue between Clitophon and Socrates, focusing on the limits of Socratic inquiry and the pursuit of virtue. The narrative unfolds as Clitophon directly addresses Socrates to express both his admiration and his deep frustration. Clitophon begins by praising Socrates for his powerful protreptic speeches, which urge people to care for their souls rather than material wealth. However, he recounts how he questioned Socrates' followers about how to actually acquire and practice justice, only to find them unable to define its specific product, leading to confusion over concepts like "harmony." Ultimately, Clitophon criticizes Socrates for being excellent at exhorting people to virtue but failing to teach the actual knowledge of justice, warning that he may turn to teachers like Thrasymachus if Socrates cannot offer further guidance.
Philosophy4 chunks · §406-407–§410308 aligned sentencesRead →Cratylus
This work is a dialogue featuring Socrates, Hermogenes, and Cratylus, which explores the 'correctness' of names (onoma)—specifically, whether names derive from the 'nature' (physis) of things or from human 'convention and agreement' (nomos). Socrates first discusses with Hermogenes, arguing that names are tools used to reveal the essence of things, and playfully analyzes the etymologies of various gods and virtues to support the naturalist view. He then turns to Cratylus, an advocate of extreme naturalism and Heraclitean flux, and demonstrates that phonetic imitation is inherently imperfect, requiring the elements of convention and habit for mutual understanding. Ultimately, Socrates exposes the limitations of seeking knowledge solely through names, suggesting instead that one must investigate the truth of realities themselves, beyond the names assigned to them. The dialogue concludes without a definitive answer, leaving the interlocutors to commit to further inquiry.
Philosophy34 chunks · §383-384–§439-4405,763 aligned sentencesRead →Critias
This unfinished dialogue by Plato, serving as a sequel to the "Timaeus", details the conflict and ultimate fates of ancient Athens and the legendary empire of Atlantis. Speaking before Socrates and the other interlocutors, Critias begins by recounting how the gods originally divided the earth, describing the virtuous and harmonious social order of primeval Athens under the patronage of Athena and Hephaestus. He then provides a lavish description of Atlantis, founded by Poseidon, detailing its colossal architecture, vast canal networks, and immense wealth fueled by resources like orichalcum. Although the rulers of Atlantis initially lived in accordance with divine laws and virtue, they eventually lost their divine nature, becoming corrupted by greed and ambition. The narrative breaks off abruptly just as Zeus convenes the gods to deliver a judgment on the fallen empire, leaving the work permanently incomplete.
Philosophy9 chunks · §106-107–§120-121762 aligned sentencesRead →Crito
This dialogue depicts the conversation between the philosopher Socrates, who has been sentenced to death, and his lifelong friend Crito, who visits him in prison on the eve of his execution to urge him to escape. Crito strongly argues for escape, citing public reputation, financial means, and duties to his children. However, Socrates responds that one must not value the opinion of the many, but rather follow logos (reason) and the wisdom of the one who understands justice. He establishes the fundamental principle that one must never commit an injustice, even in response to an injustice received. To test whether escape is just, Socrates introduces the personified Laws of Athens, which argue that by remaining in the city his entire life, he has entered into an implicit agreement to obey them. Ultimately, concluding that escaping would destroy the laws and harm his soul, Socrates refuses to flee and resolutely accepts his death in accordance with divine guidance.
Philosophy9 chunks · §43-44–§53-541,112 aligned sentencesRead →Definitions
The "Definitions" is a work that systematically lists concise, short-sentence definitions for a wide range of key concepts in ancient Greek philosophy. Unlike standard Platonic dialogues, this work consists of a collection of terms, beginning with cosmological concepts such as eternity, God, and the basic elements of nature, and moving on to classical virtues like prudence, justice, and courage. As the list progresses, it defines various concepts related to ethics, epistemology, and language, including wit, friendship, law, knowledge, philosophy, and perception. It further covers the logical and linguistic foundations of speech and syllables, political constitutions, the passions of the soul, and education. Rather than developing a specific argument or narrative, the work serves as a reference or pedagogical tool, offering an overview of how fundamental terms were defined within the Platonic tradition.
Philosophy3 chunks · §1#1–§1#3830 aligned sentencesRead →Epinomis
This philosophical dialogue explores the fundamental question of how humans can acquire true wisdom and become genuinely wise. Featuring the Athenian Stranger and Clinias as the main interlocutors, the work begins by demonstrating that practical arts and partial knowledge do not lead to true wisdom. Instead, the knowledge of "number" is presented as the essential source of wisdom, bestowed upon humanity by the divine through the regular movements of the cosmos. The discussion then develops into cosmology and theology, asserting the priority of the soul over the body and describing the five cosmic elements and the divine intelligence of the celestial bodies. Ultimately, the work concludes that a select few who master astronomy and mathematical sciences to grasp the harmonious order of the universe should assume the highest offices in the state.
Philosophy11 chunks · §973-974–§991-9921,085 aligned sentencesRead →Euthydemus
This philosophical dialogue, framed as a conversation between Socrates and his friend Crito, contrasts the fallacious "eristic" (refutation) skills of the Sophist brothers, Euthydemus and Dionysodorus, with Socrates' genuine philosophical inquiry. The work begins in the Lyceum, where the Sophists attempt to confuse the young Clinias using wordplay and semantic traps that offer no room for escape. Socrates intervenes, demonstrating the true art of protreptic (exhortation) by arguing that wisdom is the only true good and is essential for using all other assets correctly to achieve happiness. To find this ultimate knowledge, Socrates and Clinias search for a "royal art" that unites both the production and use of goods, but their inquiry leads to an intellectual impasse (aporia). Meanwhile, the Sophists escalate their absurd arguments, claiming that it is impossible to lie or contradict, and concluding with bizarre paradoxes about kinship and the gods. In the final epilogue, Socrates urges Crito not to be swayed by critics of philosophy, but to judge the value of philosophy itself, leaving a profound reflection on the pursuit of truth.
Philosophy25 chunks · §271-272–§306-3073,634 aligned sentencesRead →Euthyphro
This work is a philosophical dialogue depicting the philosopher Socrates, who has been accused of corrupting the youth, debating the essence of "piety" (hosiotēs) just before his trial. Set near the Royal Colonnade in Athens, Socrates meets Euthyphro, a religious expert who is confidently prosecuting his own father for murder. Marvelling at Euthyphro's certainty regarding sacred matters, Socrates asks to become his disciple and inquires about the essential definition of piety. Euthyphro proposes several definitions, such as "what is loved by the gods" or "service to the gods," but Socrates systematically exposes the contradictions and logical flaws in each attempt. Despite their shifting arguments, the definitions eventually circle back to their starting point, failing to grasp the universal "Form" (idea) of piety. In the end, a frustrated Euthyphro leaves on the pretext of urgent business, and the dialogue concludes in an impasse without reaching a clear definition.
Philosophy12 chunks · §2-3–§15-161,703 aligned sentencesRead →Gorgias
This philosophical dialogue explores the true nature of rhetoric—the art of persuasion—and the fundamental ethical question of how one ought to live. Socrates engages in sequential debates with the renowned rhetorician Gorgias, his disciple Polus, and the ambitious politician Callicles. Socrates argues that rhetoric is not a genuine art but a form of 'flattery' lacking true knowledge, demonstrating that committing injustice is a greater evil than suffering it, and that those who escape punishment for their misdeeds are the most miserable. Against Callicles, who advocates for a 'natural justice' where the strong indulge their desires without limit, Socrates counters that temperance and an ordered soul constitute true virtue, and that genuine politics must aim at improving the citizens' souls. The work concludes with an eschatological myth of the afterlife's judgment, asserting that only a life dedicated to practicing justice and keeping the soul healthy can bring ultimate happiness.
Philosophy53 chunks · §447-448–§5278,630 aligned sentencesRead →Hipparchus
This dialogue explores the true meaning and moral evaluation of "covetousness" (the love of gain, or *philokerdeia*) through a conversation between Socrates and an unnamed companion. The debate begins with the companion defining a covetous person as someone who tries to profit from worthless things. Socrates refutes this definition by employing various technical crafts as examples, which leads the inquiry toward the relationship between "gain" and "the good." After digressing into an anecdote about the Athenian ruler Hipparchus and his teachings against deception, the interlocutors re-examine the essence of gain. Ultimately, they agree that gain is equivalent to "the good" or the beneficial, concluding that since everyone desires the good, loving gain cannot justly be used as a term of reproach against others.
Philosophy4 chunks · §225-226–§231-232911 aligned sentencesRead →Hippias Major
This dialogue explores the elusive definition of "the beautiful" (to kalon). The narrative unfolds through a conversation between Socrates and the renowned Sophist Hippias, who has arrived in Athens filled with self-confidence. When Socrates poses the question of what beauty itself is, Hippias repeatedly offers concrete, relative examples, such as a beautiful maiden or gold, only to have them thoroughly refuted. As the discussion shifts to more abstract concepts—defining beauty as "the appropriate," "the useful," or "pleasure through sight and hearing"—each attempt collapses under logical contradictions and paradoxes. Ultimately, the dialogue ends in a state of aporia (impasse), with Socrates reflecting on the proverb that "fine things are difficult," leaving the true nature of beauty unresolved.
Philosophy20 chunks · §281-282–§3042,766 aligned sentencesRead →Hippias Minor
This philosophical dialogue features Socrates and the Sophist Hippias engaging in a discussion that begins with a comparison of Homeric heroes and shifts toward the nature of truth, falsehood, and the virtue of the human soul. Set in Olympia, the dialogue starts with Hippias defining Achilles as truthful and Odysseus as a liar; however, Socrates argues, using various arts and sciences as examples, that the person capable of speaking the truth is also the one best equipped to lie voluntarily. The debate intensifies as Socrates proposes the paradoxical idea that someone who does wrong or makes mistakes voluntarily is better than someone who does so involuntarily. Through examining bodily actions, skills, and the capacity of the soul, they are led to the absurd conclusion that only a good person can commit injustice intentionally. In the end, both interlocutors are left in deep perplexity (aporia), unable to resolve the contradiction, and the dialogue concludes without a definitive answer.
Philosophy8 chunks · §363-364–§375-3761,546 aligned sentencesRead →Ion
This early Platonic dialogue depicts a conversation between the philosopher Socrates and Ion, a celebrated rhapsode (reciter of poetry) specializing in Homer. Socrates questions why Ion possesses an extraordinary ability to interpret and speak about Homer but remains indifferent and incompetent regarding other poets. Through this inquiry, Socrates argues that artistic creation and recitation are not products of a systematic "art" (techne) or knowledge, but are instead driven by a "divine madness" or inspiration that flows like a magnetic chain from the Muses, through the poet and rhapsode, to the audience. Ion attempts to defend his expertise, eventually claiming that the rhapsode's art is identical to that of a military general. However, Socrates exposes the contradictions in this assertion through rigorous questioning. In the end, Ion is forced to accept Socrates' conclusion that his talent is not a technical skill but a divine gift.
Philosophy8 chunks · §530-531–§541-5421,197 aligned sentencesRead →Laches
This work is a Socratic dialogue by Plato that explores the nature of courage (andreia) as an essential virtue for the proper education of youth. The narrative begins when Athenian citizens Lysimachus and Melesias, seeking the best education for their sons, ask advice from the prominent generals Laches and Nicias, as well as the philosopher Socrates. Although the discussion initially focuses on the usefulness of military training, Socrates redirects the inquiry toward the care of the soul and the fundamental question of what courage truly is. General Laches first proposes definitions such as standing one's ground in battle and the endurance of the soul, but Socrates' sharp examination reveals their inadequacy. Nicias then attempts a more intellectual definition, calling courage the knowledge of what is to be feared and what is to be hoped for, but this is shown to encompass the entirety of virtue rather than just a part of it. In the end, the interlocutors fail to reach a definitive definition of courage, and acknowledging their own ignorance, they resolve to seek a teacher and continue learning together.
Philosophy16 chunks · §178-179–§200-2012,145 aligned sentencesRead →Laws
This work is a dialogue focused on designing the ideal constitution and laws for a newly founded colony. Set on the island of Crete, three elderly men—an Athenian Stranger, the Cretan Clinias, and the Spartan Megillus—engage in a deep discussion while traveling. The dialogue begins with an inquiry into the divine origin of laws and the proper role of education and festivals in nurturing overall virtue. After analyzing the historical rise and fall of various states, they proceed to construct detailed legal systems for the new city, covering geographical conditions, fair land distribution, marriage, family, and physical and musical education. The latter half of the work addresses criminal law, including homicide, as well as laws regarding piety, which prove the existence of the gods and the rational order of the cosmos. Finally, the dialogue concludes with the establishment of the Nocturnal Council, a body of guardians tasked with preserving the laws and understanding the unity of virtue.
Philosophy186 chunks · §1.624-1.625–§12.968-12.96922,734 aligned sentencesRead →Letters
This work consists of thirteen letters attributed to the philosopher Plato, addressed to Dionysius II, the tyrant of Syracuse, his friend Dion, and various other associates. The core of the collection focuses on Plato's autobiographical recollections of his youthful political disillusionment, his dedication to philosophy, and his attempts to implement the ideal of the philosopher-king in Syracuse, which ultimately faced severe turmoil and failure. In these letters, particularly the famous Seventh Letter, Plato defends his political actions amid Dion's exile and subsequent assassination, arguing that true counsel must reject violence and prioritize the rule of law. The text also delves into profound philosophical digressions, warning against the expression of ultimate truths in writing and explaining that true understanding is like a light kindled in the soul through rigorous dialectic and five stages of knowledge. In addressing the chaotic state of Sicily, the letters urge both victors and vanquished to submit to impartial laws, emphasizing that genuine happiness and justice can only be achieved when power and philosophy are united.
Others34 chunks · §1.309-1.310–§13.3633,073 aligned sentencesRead →Lysis
This work is Plato's dialogue in which the philosopher Socrates investigates the essence of "friendship" (philia) through conversations with young boys. Set in a newly built gymnasium in Athens, Socrates meets the beautiful and virtuous youth Lysis and his friend Menexenus, engaging them in a lively discussion. The dialogue begins with an examination of the relationship between parental love and personal freedom as determined by knowledge, before transitioning into a search for the definition of a "friend" (philos). Socrates and his interlocutors examine various hypotheses: whether like attracts like, whether opposites attract, whether the neither-good-nor-bad seeks the good to escape evil, and the concept of a "first friend" as the ultimate source of affection. However, even the hypothesis that friendship lies in desiring what is "appropriate" (oikeion) to oneself falls into self-contradiction, and the dialogue abruptly ends in an aporia (impasse) when the boys' tutors intervene.
Philosophy15 chunks · §203-204–§222-2231,955 aligned sentencesRead →Menexenus
This work is a dialogue centered on the funeral oration (epitaphios) for the war dead, examining the nature of rhetoric and Athenian identity. Upon meeting Menexenus, who has returned from the council chamber, Socrates offers to recite a funeral speech he claims to have learned from his teacher of rhetoric, Aspasia. The oration begins with praise for Athens' "mother soil" and its democratic constitution, followed by an account of the ancestors' heroic deeds during the Persian Wars. It then reflects on Athens' generosity during internal Greek conflicts and civil strife, and concludes with a message of exhortation from the fallen soldiers to their surviving relatives. Through this recited speech, the dialogue leads the reader to reconsider the relationship between civic glory and individual virtue.
Philosophy8 chunks · §234-235–§248-249916 aligned sentencesRead →Meno
This dialogue depicts a conversation between Socrates and the Thessalian youth Meno, centering on the question of whether virtue (arete) can be taught. In response to Meno's inquiry, Socrates asserts that they must first define what virtue actually is, systematically dismantling Meno's attempts at definition. When their discussion reaches an impasse, resulting in a paradox about the impossibility of inquiry, Socrates introduces the theory of recollection (anamnesis). He demonstrates this theory by guiding Meno's slave boy through a geometry problem, showing that the soul possesses innate truth. They then resume their investigation of virtue using a hypothesis to test whether it is knowledge, but discover a lack of teachers of virtue, even among Athens' greatest statesmen. Socrates concludes that virtue is guided not by knowledge, but by "true opinion," which is bestowed as a divine gift, while reminding Meno that they cannot truly understand virtue until they define its essence.
Philosophy20 chunks · §70-71–§99-1004,206 aligned sentencesRead →Minos
This work is a dialogue between Socrates and an unnamed companion concerning the nature of "law" (nomos). At the outset, the companion defines law as custom or state decrees, but Socrates guides him to realize that law must inherently be a good thing, characterized as the "discovery of reality." Although the companion points out the diversity of laws among different nations, Socrates argues that, just like the rules in specialized arts such as medicine or farming, only the correct regulations based on truth constitute true law. As an exemplary lawmaker, the Cretan king Minos is introduced, and his justice is praised based on his divine education under Zeus. Socrates explains that Minos's poor reputation in Athens was merely a product of hostility from local tragedy writers. Finally, Socrates asks what a great lawmaker distributes to the soul, just as a trainer distributes food to the body, but the companion remains unable to answer, ending the dialogue by confronting his own ignorance.
Philosophy6 chunks · §313-314–§3211,176 aligned sentencesRead →Parmenides
This dialogue explores critical challenges to the theory of Forms (eide) and presents a profound logical investigation into the nature of the "One" and the "Many." The narrative is framed as a recollection of a meeting in Athens where a young Socrates encounters the eminent Eleatic philosophers Parmenides and Zeno. In the first half, Parmenides subjects Socrates’ youthful theory of Forms to severe criticism, raising formidable difficulties such as infinite regress and the unknowability of the Forms. In response to these challenges, the second half transitions into a rigorous dialectical exercise demonstrated by Parmenides himself with the young Aristotle. Through eight distinct hypotheses exploring both the existence and non-existence of the One, the argument systematically examines how the One and the "Others" relate to existence, motion, time, and number. The work culminates in a dizzying array of paradoxes, concluding that whether the One exists or not, both the One and the others are and are not, appearing to be all things and nothing at all.
Philosophy36 chunks · §126-127–§165-1665,377 aligned sentencesRead →Phaedo
This dialogue depicts the final hours of the philosopher Socrates before his execution, focusing on the immortality of the soul and the true meaning of practicing philosophy. Set in an Athenian prison, the work is narrated by Phaedo, who recalls the conversations Socrates had with his disciples, including Simmias and Cebes, on the day of his death. Socrates argues that death is merely the separation of the soul from the body, and since true philosophers spend their lives preparing for this liberation, they should not fear death. To prove that the soul survives death, he introduces several arguments, including the theory of recollection (anamnesis) and the affinity between the soul and the immutable Forms. Even when faced with sharp counterarguments from his disciples, Socrates successfully demonstrates the soul's immortality using his philosophical method of 'the second voyage' and the theory of Forms. After concluding with a grand myth about the destiny of souls in the afterlife, Socrates calmly drinks the poison and meets his end with ultimate composure.
Philosophy55 chunks · §57-58–§117-1184,718 aligned sentencesRead →Phaedrus
In this dialogue, the philosopher Socrates and the young Phaedrus meet in the beautiful countryside outside Athens to discuss love (Eros) and the art of rhetoric. The conversation begins with a speech advocating that one should yield to a non-lover rather than a lover, prompting Socrates to counter with his own grand discourse. In his famous recantation, Socrates portrays love as a divine madness and explains the nature of the soul using the myth of a winged chariot, describing its journey to contemplate ultimate beauty in the heavens. The dialogue then shifts to an inquiry into the nature of beautiful writing and speaking, where Socrates argues that true rhetoric must be based on dialectic—specifically the methods of collection and division—and a deep understanding of the human soul. Ultimately, they criticize the written word for inducing forgetfulness and conclude that only the living speech written directly in the listener's soul possesses genuine value for a true philosopher.
Philosophy28 chunks · §227-228–§278-2794,095 aligned sentencesRead →Philebus
This work is a philosophical dialogue between Socrates and Protarchus that investigates whether "pleasure" or "intelligence (wisdom and knowledge)" is the true "good" that makes human life happy. Socrates begins by showing that both pleasure and knowledge are diverse and contain internal differences, introducing a dialectical method of "the one and the many" and a fourfold classification of existence: the unlimited, the limit, the mixture, and the cause. Through rigorous inquiry, they agree that neither a life of pure pleasure nor a life of pure intellect is self-sufficient, and that a "mixed life" combining both is the most desirable for humans. To determine the components of this ideal life, the dialogue minutely analyzes various types of physical and mental pleasures, the mixtures of pleasure and pain, and the degrees of purity in different branches of knowledge. Ultimately, they identify "measure (proportion)," "beauty," and "truth" as the key elements that make the mixture good, concluding that intellect is far closer to the good than pleasure and ranks much higher in the hierarchy of values.
Philosophy34 chunks · §11-12–§66-675,974 aligned sentencesRead →Protagoras
This work is a Socratic dialogue by Plato that explores whether human virtue (arete) can be taught and what its true nature is. The dialogue takes place at the house of Callias, where Socrates engages in an intellectual debate with Protagoras, a renowned Sophist visiting Athens. At the beginning, Protagoras argues that virtue is teachable, using a myth about the origin of humanity and examples of civic education, while Socrates doubts this by pointing out that virtuous leaders often fail to pass their virtue to their sons. The discussion then shifts to whether individual virtues such as justice, temperance, and courage are separate parts or essentially one with wisdom (sophia). In the latter half, Socrates demonstrates that "being overcome by pleasure" is actually a result of ignorance—a lack of the "art of measurement" regarding good and evil—and concludes that virtue is a form of knowledge. Ultimately, the dialogue ends with a humorous reversal: Socrates, who initially argued that virtue cannot be taught, ends up showing it is knowledge (which is teachable), while Protagoras, who claimed it can be taught, retreats from identifying it with knowledge, leaving the inquiry to be resumed another time.
Philosophy33 chunks · §309-310–§361-3624,090 aligned sentencesRead →Republic
This dialogue, featuring Socrates as the main interlocutor, explores the fundamental questions of "What is justice?" and "Is a just life happier than an unjust one?" To discern justice in the individual, Socrates and his companions embark on a mental construction of an ideal state. Within this state, they define justice as the harmony among the three parts of the soul—reason, spirit, and appetite—which correspond to the social classes of the polis. The discussion proceeds to outline the education of the "philosopher-king" who must govern the city, illustrated through the transcendent "Form of the Good." In the later sections, the dialogue contrasts the misery of the tyrannical soul with the supreme happiness of the just person through an analysis of degenerating constitutions. Finally, after a critique of imitative poetry and a proof of the immortality of the soul, the work concludes with the "Myth of Er," encouraging readers to choose a life of wisdom and justice.
Philosophy153 chunks · §1.327-1.328–§10.620-10.62119,751 aligned sentencesRead →Rival Lovers
This work is a dialogue that explores the true definition and value of philosophy. Visiting the school of Dionysius, Socrates encounters two rival lovers competing for the attention of a youth, and a discussion ensues between them. While his interlocutor argues that a philosopher should be an all-around intellectual who understands various arts without specializing, Socrates counters that such a figure would be useless in the presence of actual specialists. Ultimately, Socrates demonstrates that true philosophy is not a mere collection of superficial skills, but rather the practice of self-knowledge (sophrosyne) and justice, which enables one to rightly guide souls and govern both households and states.
Philosophy4 chunks · §132-133–§138-139672 aligned sentencesRead →Sophist
This work is a dialogue by Plato that primarily aims to define the nature of the "sophist." The discussion is led by a Visitor from Elea and the young mathematician Theaetetus, while Socrates and Theodorus look on. They begin with a preliminary exercise of defining an "angler" to establish their method, which they then apply to the sophist. However, because the sophist appears in various guises—such as a wealth-seeker, a disputant, and a purveyor of false knowledge—the definition proves elusive. The inquiry is forced to confront a profound philosophical puzzle inherited from Parmenides: how can "non-being" (what is not) or "falsehood" exist at all if only "being" is? To resolve this, the Eleatic Visitor conducts a rigorous analysis of the "five greatest kinds"—Being, Rest, Motion, Sameness, and Difference—demonstrating that non-being is not the opposite of being, but rather "the different." This framework successfully explains how false statements (logos) can exist through the combination of nouns and verbs. In the end, they successfully define the sophist as an insincere, imitative illusion-maker who, conscious of his own ignorance, forces others into self-contradiction in private arguments.
Philosophy30 chunks · §216-217–§267-2687,139 aligned sentencesRead →Statesman
This philosophical dialogue explores the definition of the true "statesman" and the art of ruling (the kingly art). The conversation, led by the Eleatic Stranger and Young Socrates, begins with a rigorous method of division to classify forms of knowledge. Midway through, a grand myth about the reversal of the cosmic rotation is introduced, distinguishing the divine shepherd of the past from the human rulers of the present. Using the paradigm of "weaving," the dialogue then examines the limitations of written laws and establishes "knowledge" as the only true criterion for governance. Ultimately, the statesman's art is defined as a supreme directive art that coordinates subordinate skills and harmoniously "weaves" together citizens of contrasting temperaments—the courageous and the temperate—into a unified state.
Philosophy34 chunks · §257-258–§310-3115,141 aligned sentencesRead →Symposium
This dialogue depicts a gathering of Athenian intellectuals at the house of the tragic poet Agathon, where they take turns delivering speeches in praise of the god of love, Eros. The participants explore love from various angles, discussing its role in inspiring virtue, the distinction between heavenly and earthly love, love as cosmic harmony, and the famous myth of original, spherical humans seeking their lost halves. When it is Socrates' turn, he recounts the teachings of the priestess Diotima, explaining that Eros is an intermediary being who guides the soul upward from physical attraction to the contemplation of "Beauty itself" (the Idea). Toward the end, the drunken young politician Alcibiades crashes the banquet and passionately praises Socrates' unique virtue and inner beauty. The dialogue concludes at dawn after a chaotic night, with Socrates discussing the unity of tragedy and comedy before departing.
Philosophy36 chunks · §172-173–§222-2234,082 aligned sentencesRead →Theaetetus
This dialogue explores the fundamental question "What is knowledge (episteme)?" through a conversation among Socrates, the young mathematician Theaetetus, and the geometer Theodoros. Formatted as a reading of a recorded past conversation, the work begins with Socrates comparing his philosophical method to "midwifery," helping others bring forth and examine their own ideas. Theaetetus first proposes that "knowledge is perception," which Socrates scrutinizes by linking it to the relativism of Protagoras and the flux theory of Heraclitus. Next, they examine "knowledge as true belief," exploring the mechanism of false belief through the famous metaphors of the "wax tablet" and the "aviary." Finally, the third definition, "true belief accompanied by an explanation (logos)," is analyzed but also leads to an impasse regarding what constitutes an explanation. Ultimately, the dialogue ends in aporia (a state of puzzle) without a definitive answer, yet it succeeds in freeing Theaetetus from false knowledge and preparing him for deeper inquiry.
Philosophy45 chunks · §142-143–§209-2107,270 aligned sentencesRead →Theages
This dialogue depicts the young Theages, who, eager to acquire wisdom, seeks to become a disciple of Socrates. The story begins when his father, Demodocus, consults Socrates about his son's education. Through dialogue, Socrates reveals that the "wisdom" Theages seeks is actually the art of ruling over people, leading to a discussion on whether one can learn this from famous politicians. When Theages earnestly begs to study under Socrates himself, Socrates modestly claims to possess no educational wisdom but begins to speak of his "daimonion" (the divine voice) that guides his actions. Socrates explains, with concrete examples, how this divine power mysteriously influences his associates, determining whether they make progress or not. In the end, Theages and Demodocus propose to try spending time together to see how the divine sign responds, a proposal to which Socrates agrees, bringing the dialogue to a close.
Philosophy8 chunks · §121-122–§130-1311,152 aligned sentencesRead →Timaeus
This work is a philosophical and cosmological dialogue that depicts the origin of the cosmos and the nature of humanity on a grand scale, through a conversation between the philosopher Socrates and his intellectually distinguished guests: Timaeus, Critias, and Hermocrates. The dialogue begins with a retrospective of an ideal state and the famous historical legend of the ancient war between Athens and the lost empire of Atlantis. Timaeus then takes center stage to deliver a comprehensive discourse, explaining how the divine craftsman, the Demiurge, brought order to chaos and fashioned the cosmos as a living, intelligent being endowed with a soul and body. He mathematically accounts for the four elements using geometric polyhedra and proceeds to detail the anatomical structure of the human body, the mechanisms of perception and respiration, as well as the causes of physical and mental illnesses. Finally, the discourse concludes by describing the process of reincarnation into various animal forms based on the state of the soul, completing the portrait of the cosmos as a visible, perfect divinity.
Philosophy41 chunks · §17-18–§91-923,946 aligned sentencesRead →