Plato Quotes: 80 Quotes Inspiring Wisdom and Enlightenment

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Famous Plato Quotes

“Thinking is talking of soul with itself.”

Plato

“Love sees no enemies…fear does.”

Plato

“For once touched by love, everyone becomes a poet”

Plato

196
The Symposium

“The man who makes everything that leads to happiness depends upon himself, and not upon other men, has adopted the very best plan for living happily. This is the man of moderation, the man of manly character and of wisdom.”

Plato

“Love is a serious mental disease. ”

Plato

“Knowledge without justice ought to be called cunning rather than wisdom.”

Plato

Plato Quotes about men

“Wise men speak because they have something to say; Fools because they have to say something.”

Plato

“There are three classes of men; lovers of wisdom, lovers of honor, and lovers of gain.”

Plato

“Sons, the event proves that your fathers were brave men; for we might have lived dishonourably, but have preferred to die honourably rather than bring you and your children into disgrace, and rather than dishonour our own fathers and forefathers”

Plato book Menexenus

A speech of Aspasia, recounted by Socrates, as portrayed in the dialogue.
Menexenus
Context: p>Let every man remind their descendants that they also are soldiers who must not desert the ranks of their ancestors, or from cowardice fall behind. Even as I exhort you this day, and in all future time, whenever I meet with any of you, shall continue to remind and exhort you, O ye sons of heroes, that you strive to be the bravest of men. And I think that I ought now to repeat what your fathers desired to have said to you who are their survivors, when they went out to battle, in case anything happened to them. I will tell you what I heard them say, and what, if they had only speech, they would fain be saying, judging from what they then said. And you must imagine that you hear them saying what I now repeat to you:Sons, the event proves that your fathers were brave men; for we might have lived dishonourably, but have preferred to die honourably rather than bring you and your children into disgrace, and rather than dishonour our own fathers and forefathers; considering that life is not life to one who is a dishonour to his race, and that to such a one neither men nor Gods are friendly, either while he is on the earth or after death in the world below.Remember our words, then, and whatever is your aim let virtue be the condition of the attainment of your aim, and know that without this all possessions and pursuits are dishonourable and evil.For neither does wealth bring honour to the owner, if he be a coward; of such a one the wealth belongs to another, and not to himself. Nor does beauty and strength of body, when dwelling in a base and cowardly man, appear comely, but the reverse of comely, making the possessor more conspicuous, and manifesting forth his cowardice.And all knowledge, when separated from justice and virtue, is seen to be cunning and not wisdom; wherefore make this your first and last and constant and all-absorbing aim, to exceed, if possible, not only us but all your ancestors in virtue; and know that to excel you in virtue only brings us shame, but that to be excelled by you is a source of happiness to us.And we shall most likely be defeated, and you will most likely be victors in the contest, if you learn so to order your lives as not to abuse or waste the reputation of your ancestors, knowing that to a man who has any self-respect, nothing is more dishonourable than to be honoured, not for his own sake, but on account of the reputation of his ancestors.The honour of parents is a fair and noble treasure to their posterity, but to have the use of a treasure of wealth and honour, and to leave none to your successors, because you have neither money nor reputation of your own, is alike base and dishonourable.And if you follow our precepts you will be received by us as friends, when the hour of destiny brings you hither; but if you neglect our words and are disgraced in your lives, no one will welcome or receive you. This is the message which is to be delivered to our children.</p

“We can easily forgive a child who is afraid of the dark; the real tragedy of life is when men are afraid of the light.”

Plato

This quotation, often attributed on the Internet to Plato, cannot be found in any of Plato's writings, nor can it be found in any published work anywhere until recent years. If it really were a quotation by Plato, then some author in the recorded literature of the last several centuries would have mentioned that quote, but they did not. The sentiment isn't new, however. The ancient Roman Seneca, in his work on "Morals," quoted an earlier Roman writer, Lucretius (who wrote about the year 50 B.C.), as saying "we are as much afraid in the light as children in the dark." (Seneca was paraphrasing a longer passage by Lucretius from De Rerum Natura (On the Nature of Things), Book II, lines 56 et seq.)
Misattributed

“I shall argue that to seem to speak well of the gods to men is far easier than to speak well of men to men: for the inexperience and utter ignorance of his hearers about any subject is a great assistance to him who has to speak of it, and we know how ignorant we are concerning the gods.”

Plato

107b
Critias

“It would be better for me … that multitudes of men should disagree with me rather than that I, being one, should be out of harmony with myself.”

Plato

Words spoken by Socrates, 482c
Gorgias

Plato: Trending quotes

“Doing what is for the good of the people, this must be the truest criterion of right government, in accordance with which the wise and good man will govern the affairs of his subjects. Just as the captain of a ship keeps watch for what is at any moment for the good of the vessel and the sailors, not by writing rules, but by making his science his law, and thus preserves his fellow voyagers, so may not a right government be established in the same way by men who could rule by this principle, making science more powerful than the laws? And whatever the wise rulers do, they can commit no error, so long as they maintain one great principle and by always dispensing absolute justice to them with wisdom and science are able to preserve the citizens and make them better than they were, so far as that is possible.”

Plato book Statesman

296d-297b
Statesman

Wisdom , Men , People , Way

“The greatest and noblest conceptions have no image wrought plainly for human vision, which he who wishes to satisfy the mind of the inquirer can apply to some one of his senses and by mere exhibition satisfy the mind. We must therefore endeavor by practice to acquire the power of giving and understanding a rational definition of each one of them; for immaterial things, which are the noblest and greatest, can be exhibited by reason only, and it is for their sake that all we are saying is said. But it is always easier to practice in small matters than in greater ones.”

Plato book Statesman

285e-286b
Statesman

Understanding , Sense

“One of the penalties for refusing to participate in politics is that you end up being governed by your inferiors.”

Plato The Republic

Source: Republic

Penalty

Plato Quotes

“Watch a man at play for an hour and you can learn more about him than in talking to him for a year.”

Plato

Attributed to Plato in Confidence : How to Succeed at Being Yourself (1987) by Alan Loy McGinnis, this is probably a paraphrase of a statement which occurs in Letter of Advice to a Young Gentleman Leaving the University Concerning His Behaviour and Conversation in the World (1907) by Richard Lindgard: "Take heed of playing often or deep at Dice and Games of Chance, for that is more chargeable than the seven deadly sins; yet you may allow yourself a certain easie Sum to spend at Play, to gratifie Friends, and pass over the Winter Nights, and that will make you indifferent for the Event. If you would read a man’s Disposition, see him Game; you will then learn more of him in one hour, than in seven Years Conversation, and little Wagers will try him as soon as great Stakes, for then he is off his Guard."
Variants:
You can learn more about a person in an hour of play than in a year of conversation.
Attributed to Plato in Food Is the Frosting-Company Is the Cake (2007) by Maggie Marshall
You learn more about a person in an hour of play than in a year of conversation.
Attributed to Plato by former Alaska Gov. Sarah Palin, as quoted in "Aspiring philosopher Palin quotes 'Plato'" (9 July 2009) http://thinkprogress.org/2009/07/09/palin-plato/
Misattributed

Learning

“As empty vessels make the loudest sounds, so they that have the least wit are the greatest babblers.”

Plato

Often attributed to Plato, it cannot be found in any of his writings. http://languagelog.ldc.upenn.edu/nll/?p=796
Misattributed

“Man: a being in search of meaning.”

Plato

“Pleasure, a most mighty lure to evil.”

Plato book Timaeus

Section 69d (W. R. M. Lamb's translation); also rendered: pleasure, "the bait of sin" (W.A. Falconer's translation).
Timaeus

Pleasure , Evil

“Be kind, for everyone you meet is fighting a hard battle.”

Plato

Attributed to Plato in No Ordinary Moments: A Peaceful Warrior's Guide to Daily Life (1992) by Dan Millman. It has also been wrongly attributed to Philo. It is a variant of the Christmas message "Be pitiful, for every man is fighting a hard battle," written by the Scottish preacher Ian Maclaren (also known as John Watson) in 1897.
Be Kind; Everyone You Meet is Fighting a Hard Battle. Plato? Philo of Alexandria? http://quoteinvestigator.com/2010/06/29/be-kind/
Misattributed

Leadership , Fight

“In those days, when people were not wise like you young people, they were content to listen to a tree or a rock in simple openness, just as long as it spoke the truth, but to you, perhaps, it makes a difference who is speaking and where he comes from.”

Plato book Phaedrus

275c, as translated by Joe Sachs in introduction to Aristotle's Physics: A Guided Study (2011), p. 1
Phaedrus

People , Truth , Tree

“…the madness of love is the greatest of heaven's blessings…”

Plato book Phaedrus

245b–c
Phaedrus

Love , Madness

“Let every man remind their descendants that they also are soldiers who must not desert the ranks of their ancestors, or from cowardice fall behind.”

Plato book Menexenus

A speech of Aspasia, recounted by Socrates, as portrayed in the dialogue.
Menexenus
Context: Let every man remind their descendants that they also are soldiers who must not desert the ranks of their ancestors, or from cowardice fall behind. Even as I exhort you this day, and in all future time, whenever I meet with any of you, shall continue to remind and exhort you, O ye sons of heroes, that you strive to be the bravest of men. And I think that I ought now to repeat what your fathers desired to have said to you who are their survivors, when they went out to battle, in case anything happened to them. I will tell you what I heard them say, and what, if they had only speech, they would fain be saying, judging from what they then said. And you must imagine that you hear them saying what I now repeat to you:

Sons, the event proves that your fathers were brave men; for we might have lived dishonourably, but have preferred to die honourably rather than bring you and your children into disgrace, and rather than dishonour our own fathers and forefathers; considering that life is not life to one who is a dishonour to his race, and that to such a one neither men nor Gods are friendly, either while he is on the earth or after death in the world below.

Remember our words, then, and whatever is your aim let virtue be the condition of the attainment of your aim, and know that without this all possessions and pursuits are dishonourable and evil.

For neither does wealth bring honour to the owner, if he be a coward; of such a one the wealth belongs to another, and not to himself. Nor does beauty and strength of body, when dwelling in a base and cowardly man, appear comely, but the reverse of comely, making the possessor more conspicuous, and manifesting forth his cowardice.

And all knowledge, when separated from justice and virtue, is seen to be cunning and not wisdom; wherefore make this your first and last and constant and all-absorbing aim, to exceed, if possible, not only us but all your ancestors in virtue; and know that to excel you in virtue only brings us shame, but that to be excelled by you is a source of happiness to us.

And we shall most likely be defeated, and you will most likely be victors in the contest, if you learn so to order your lives as not to abuse or waste the reputation of your ancestors, knowing that to a man who has any self-respect, nothing is more dishonourable than to be honoured, not for his own sake, but on account of the reputation of his ancestors.

The honour of parents is a fair and noble treasure to their posterity, but to have the use of a treasure of wealth and honour, and to leave none to your successors, because you have neither money nor reputation of your own, is alike base and dishonourable.

And if you follow our precepts you will be received by us as friends, when the hour of destiny brings you hither; but if you neglect our words and are disgraced in your lives, no one will welcome or receive you. This is the message which is to be delivered to our children.

“Oh dear Pan and all the other Gods of this place, grant that I may be beautiful inside.”

Plato book Phaedrus

279 – a prayer of Socrates, as portrayed in the dialogue.
Phaedrus
Context: Oh dear Pan and all the other Gods of this place, grant that I may be beautiful inside. Let all my external possessions be in friendly harmony with what is within. May I consider the wise man rich. As for gold, let me have as much as a moderate man could bear and carry with him.

God , Beauty

“Your silence gives consent.”

Plato book Cratylus

435b
Cratylus
Variant: I shall assume that your silence gives consent

Silence

“Neither family, nor privilege, nor wealth, nor anything but Love can light that beacon which a man must steer by when he sets out to live the better life.”

Plato

178c, M. Joyce, trans, Collected Dialogues of Plato (1961), p. 533
The Symposium

Love , Life , Family , Light

“Neither human wisdom nor divine inspiration can confer upon man any greater blessing than this [live a life of happiness and harmony here on earth].”

Plato book Phaedrus

256b
Phaedrus

Life , Wisdom , Happiness

“Socrates: The disgrace begins when a man writes not well, but badly.
Phaedrus: Clearly.
Socrates: And what is well and what is badly—need we ask Lysias, or any other poet or orator, who ever wrote or will write either a political or any other work, in metre or out of metre, poet or prose writer, to teach us this?”

Plato book Phaedrus

258d (tr. Benjamin Jowett)
paraphrased in Zen and the Art of Motorcycle Maintenance by Robert M. Pirsig: "And what is good, Phaedrus, and what is not good—need we ask anyone to tell us these things?"
Phaedrus

“Knowledge is the food of the soul; and we must take care, my friend, that the Sophist does not deceive us when he praises what he sells, like the dealers wholesale or retail who sell the food of the body; for they praise indiscriminately all their goods, without knowing what are really beneficial or hurtful.”

Plato book Protagoras

313c, Benjamin Jowett, trans.
Protagoras

Food , Soul , Knowledge , Hurt

“The vicious lover is the follower of earthly Love who desires the body rather than the soul; his heart is set on what is mutable and must therefore be inconstant. And as soon as the body he loves begins to pass the first flower of its beauty, he "spreads his wings and flies away," giving the lie to all his pretty speeches and dishonoring his vows, whereas the lover whose heart is touched by moral beauties is constant all his life, for he has become one with what will never fade.”

Plato

183e, M. Joyce, trans, Collected Dialogues of Plato (1961), p. 537
The Symposium

Love , Life , Lie , Beauty

“Then the case is the same in all the other arts for the orator and his rhetoric; there is no need to know the truth of the actual matters, but one merely needs to have discovered some device of persuasion which will make one appear to those who do not know to know better than those who know.”

Plato

Gorgias

Truth , Art , Appearance

“My love, Alcibiades, which I hardly like to confess, would long ago have passed away, as I flatter myself, if I saw you loving your good things, or thinking that you ought to pass life in the enjoyment of them.”

Plato

Socrates speaking to Alcibiades
Alcibiades I

Love , Life , Thinking

“Socrates: The shoemaker, for example, uses a square tool, and a circular tool, and other tools for cutting?
Alcibiades: Yes.
Socrates: But the tool is not the same as the cutter and user of the tool?
Alcibiades: Of course not. …
Socrates: Then what shall we say of the shoemaker? Does he cut with his tools only or with his hands?
Alcibiades: With his hands as well.
Socrates: He uses his hands too?
Alcibiades: Yes. …
Socrates: And does not a man use the whole body?
Alcibiades: Certainly.
Socrates: And that which uses is different from that which is used?
Alcibiades: True.
Socrates: Then a man is not the same as his own body?
Alcibiades: That is the inference.
Socrates: What is he, then?
Alcibiades: I cannot say.
Socrates: Nay, you can say that he is the user of the body.
Alcibiades: Yes.
Socrates: And the user of the body is the soul?
Alcibiades: Yes, the soul.”

Plato

Alcibiades I

Soul

“Rhetoric, it seems, is a producer of persuasion for belief, not for instruction in the matter of right and wrong … And so the rhetorician's business is not to instruct a law court or a public meeting in matters of right and wrong, but only to make them believe.”

Plato

Gorgias

Law , Business

“It would be a hard task to discover the maker and father of this universe of ours, and even if we did find him, it would be impossible to speak of him to everyone.”

Plato book Timaeus

Section 28c http://www.perseus.tufts.edu/hopper/text?doc=Perseus:text:1999.01.0180:text=Tim.:section=28c, Greek http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0179%3Atext%3DTim.%3Asection%3D28c as quoted in The Watchtower, 2015, 2/15, pp. 19–23 http://wol.jw.org/en/wol/d/r1/lp-e/2015127
Timaeus

Universe

“As a breeze or an echo rebounds from the smooth rocks and returns whence it came, so does the stream of beauty, passing through the eyes which are the windows of the soul, come back to the beautiful one.”

Plato book Phaedrus

255c
Phaedrus

Beauty , Soul

“Friends have all things in common.”

Plato book Phaedrus

279
Phaedrus

“Your pride has been too much for the pride of your admirers; they were numerous and high-spirited, but they have all run away, overpowered by your superior force of character; not one of them remains. And I want you to understand the reason why you have been too much for them. You think that you have no need of them or of any other man, for you have great possessions and lack nothing, beginning with the body, and ending with the soul.”

Plato

Socrates speaking to Alcibiades
Alcibiades I

Soul , Understanding , Thinking

“I only wish that wisdom were the kind of thing that flowed … from the vessel that was full to the one that was empty.”

Plato

175d
The Symposium

Wisdom

“And when the father who begat it perceived the created image of the eternal gods, that it had motion and life, he rejoiced and was well pleased; and he bethought him to make it yet more nearly like its pattern. Now whereas that is a living being eternally existent, even so he essayed to make this All the like to the best of his power. Now so it was that the nature of the ideal was eternal. But to bestow this attribute altogether upon a created thing was impossible; so he bethought him to make a moving image of eternity, and while he was ordering the universe he made of eternity that abides in unity an eternal image moving according to number, even that which we have named time. For whereas days and nights and months and years were not before the universe was created, he then devised the generation of them along with the fashioning of the universe. Now all these are portions of time, and was and shall be are forms of time that have come to be, although we wrongly ascribe them unawares to the eternal essence. For we say that it was and is and shall be, but in verity is alone belongs to it: and was and shall be it is meet should be applied only to Becoming which moves in time; for these are motions. But that which is ever changeless without motion must not become elder or younger in time, neither must it have become so in past nor be so in the future; nor has it to do with any attributes that Becoming attaches to the moving objects of sense: these have come into being as forms of time, which is the image of eternity and revolves according to number. Moreover we say that the become is the become, and the becoming is the becoming, and that which shall become is that which shall become, and not-being is not-being. In all this we speak incorrectly. But concerning these things the present were perchance not the right season to inquire particularly.”

Plato book Timaeus

38b, as quoted by R. D. Archer-Hind, The Timaeus of Plato (1888)
Timaeus

Life , God , Fashion , Nature

“Time then has come into being along with the universe, that being generated together, together they may be dissolved, should a dissolution of them ever come to pass; and it was made after the pattern of the eternal nature, that it might be as like to it as was possible. For the pattern is existent for all eternity; but the copy has been and is and shall be throughout all time continually. So then this was the plan and intent of God for the generation of time; the sun and the moon and five other stars which have the name of planets have been created for defining and preserving the numbers of time. …and a month is fulfilled when the moon, after completing her own orbit, overtakes the sun; a year, when the sun has completed his own course. But the courses of the others men have not taken into account, save a few out of many… they do not know that time arises from the wanderings of these, which are incalculable in multitude and marvellously intricate. None the less however can we observe that the perfect number of time fulfils the perfect year at the moment when the relative swiftnesses of all the eight revolutions accomplish their course together and reach their starting-point, being measured by the circle of the same and uniformly moving. In this way then and for these causes were created all such of the stars as wander through the heavens and turn about therein, in order that this universe may be most like to the perfect and ideal animal by its assimilation to the eternal being.”

Plato book Timaeus

38d–40a, as quoted by R. D. Archer-Hind, The Timaeus of Plato https://books.google.com/books?id=q2YMAAAAIAAJ (1888)
Timaeus

Men , God , Way , Star

“[Aristotle] was the most eminent of all the pupils of Plato…. He seceded from Plato while he was still alive; so that they tell a story that [Plato] said, "Aristotle has kicked us off, just as chickens do their mother after they have been hatched."”

Plato

’’The Lives and Opinions of Eminent Philosophers’’, Book V, "Life of Aristotle" http://classicpersuasion.org/pw/diogenes/dlaristotle.htm paragraphs II and IV, as translated by C. D. Yonge
In Diogenes Laërtius

“Necessity is the mother of invention.”

Plato The Republic

Commonly misattributed due to Benjamin Jowett's popular idiomatic translation (1871) of Plato's Republic, Book II, 369c as "The true creator is necessity, who is the mother of our invention." Jowett's translation is noted for injecting flowery, if not florid, language familiar to his Victorian era audience. (See "Note on the Translation", by Elizabeth Watson Scharffenberger, ed., in Republic (2005), Spark Educational Publishing, ISBN 1593080972, p. liii http://books.google.com/books?id=9FLdTCiaI_MC&pg=PR53.) Jowett himself, in Plato's Republic: The Greek Text, Vol. III "Notes", 1894, p. 82, gives a literal translation of Plato as "our need will be the real creator," without the proverbial flourish. The Greek text is: ποιήσει δὲ αὐτήν, ὡς ἔοικεν, ἡ ἡμετέρα χρεία. Perseus.tufts.edu http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0167%3Abook%3D2%3Asection%3D369c
Misattributed

“As you hope to prove your own great value to the state, and having proved it, to attain at once to absolute power, so do I indulge a hope that I shall be the supreme power over you, if I am able to prove my own great value to you.”

Plato

Socrates speaking to Alcibiades
Alcibiades I

Hope

“Meno: I feel, somehow, that I like what you are saying.
Socrates: And I, Meno, like what I am saying. Some things I have said of which I am not altogether confident. But that we shall be better and braver and less helpless if we think that we ought to enquire, than we should have been if we indulged in the idle fancy that there was no knowing and no use in seeking to know what we do not know; — that is a theme upon which I am ready to fight, in word and deed, to the utmost of my power.”

Plato book Meno

Meno

Feeling , Confidence , Thinking , Fight

“But if with your mind's eye you regard the absolute great and these many great things in the same way, will not another great appear beyond, by which all these must appear to be great?”

Plato book Parmenides

132a
Parmenides

Way , Appearance

“It is impossible to conceive of many without one.”

Plato book Parmenides

166b
Parmenides

“Wonder is the feeling of a philosopher, and philosophy begins in wonder.”

Plato book Theaetetus

155, The Dialogues of Plato, Volume 3, 1871, p. 377 http://books.google.com/books?id=4kQNAAAAIAAJ&pg=PA377
Theaetetus

Feeling

“And the true order of going, or being led by another, to the things of love, is to begin from the beauties of earth and mount upwards for the sake of that other beauty, using these steps only, and from one going on to two, and from two to all fair forms to fair practices, and from fair practices to fair notions, until from fair notions he arrives at the notion of absolute beauty, and at last knows what the essence of beauty is.”

Plato

211
The Symposium

Love , Beauty

“Atheism is a disease of the soul, before it becomes an error of the understanding.”

Plato

Misattributed to Plato in Laws by Conservapedia http://www.conservapedia.com/Atheism_Quotes. Actual source: William Fleming, as quoted in Prose Quotations from Socrates to Macaulay by Samuel Austin Allibone, 1816–1889. http://www.bartleby.com/349/authors/74.html
Misattributed

Disease , Error , Soul , Understanding

“You want to know whether I can make a long speech, such as you are in the habit of hearing; but that is not my way.”

Plato

Socrates speaking to Alcibiades
Alcibiades I

Way

“After much effort, as names, definitions, sights, and other data of sense, are brought into contact and friction one with another, in the course of scrutiny and kindly testing by men who proceed by question and answer without ill will, with a sudden flash there shines forth understanding about every problem, and an intelligence whose efforts reach the furthest limits of human powers.”

Plato

Online http://classics.mit.edu/Plato/seventh_letter.html
The 7th Epistle

Men , Intelligence , Understanding , Question

“Just as things in a picture, when viewed from a distance, appear to be all in one and the same condition and alike.”

Plato book Parmenides

165c
Parmenides

Appearance

“The inexperienced in wisdom and virtue, ever occupied with feasting and such, are carried downward, and there, as is fitting, they wander their whole life long, neither ever looking upward to the truth above them nor rising toward it, nor tasting pure and lasting pleasures. Like cattle, always looking downward with their heads bent toward the ground and the banquet tables, they feed, fatten, and fornicate. In order to increase their possessions they kick and butt with horns and hoofs of steel and kill each other, insatiable as they are.”

Plato The Republic

586a–b
The Republic

Life , Wisdom , Pleasure , Truth

“All that is said by any of us can only be imitation and representation.”

Plato

107b
Critias

“Music is a moral law. It gives a soul to the universe, wings to the mind, flight to the imagination, a charm to sadness, gaiety and life to everything. It is the essence of order, and leads to all that is good, just, and beautiful, of which it is the invisible, but nevertheless dazzling, passionate, and eternal form.”

Plato

This quotation is not known to exist in Plato's writings. It apparently first appeared as a quotation attributed to Plato in The Pleasures of Life, Part II by Sir John Lubbock (Macmillan and Company, London and New York), published in 1889.
Misattributed

Life , Sadness , Law , Beauty

“There is no one who ever acts honestly in the administration of states, nor any helper who will save any one who maintains the cause of the just.”

Plato The Republic

496d
The Republic

“Ignorance, the root and stem of all evil.”

Plato

Attributed to Plato on quotes sites but never sourced.
Disputed

Evil

“Successful people never worry about what others are doing.”

Plato

Alleged source in Plato unknown. Earliest occurrence to have been located is a Tweet from 2011 https://twitter.com/ochocinco/status/93332058864238592.
Disputed

People , Success

“No one should be discouraged, Theaetetus, who can make constant progress, even though it be slow.”

Plato book Sophist

Original Greek, from Sophist 261b http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.01.0172%3Atext%3DSoph.%3Asection%3D261b: θαρρεῖν, ὦ Θεαίτητε, χρὴ τὸν καὶ σμικρόν τι δυνάμενον εἰς τὸ πρόσθεν ἀεὶ προϊέναι.
Also quoted in variant forms such as: Never discourage anyone who continually makes progress, no matter how slow
Sophist