Plato

And the shoemaker was not allowed by us to be husbandman, or a weaver, a builder — in order that we might have our shoes well made; but to him and to every other worker was assigned one work for which he was by nature fitted, and at that he was to continue working all his life long and at no other; he was not to let opportunities slip, and then he would become a good workman.
Now nothing can be more important than that the work of a soldier should be well done. But is war an art so easily acquired that a man may be a warrior who is also a husbandman, or shoemaker, or other artisan; although no one in the world would be a good dice or draught player who merely took up the game as a recreation, and had not from his earliest years devoted himself to this and nothing else?
No tools will make a man a skilled workman, or master of defence, nor be of any use to him who has not learned how to handle them, and has never bestowed any attention upon them. How then will he who takes up a shield or other implement of war become a good fighter all in a day, whether with heavy-armed or any other kind of troops?
Yes, he [Glaucon] said, the tools which would teach men their own use would be beyond price.

Must not all things at the last be swallowed up in death?

Will you not allow that I have as much of the spirit of prophecy in me as the swans? For they, when they perceive that they must die, having sung all their life long, do then sing more lustily than ever, rejoicing in the thought that they are going to the god they serve.

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.

Democracy passes into despotism.

Are we assured that there are two things which lead men to believe in the Gods, as we have already stated?
What are they?
One is the argument about the soul, which has been already mentioned — that it is the eldest and most divine of all things, to which motion attaining generation gives perpetual existence; the other was an argument from the order of the motion of the stars, and of all things under the dominion of the mind which ordered the universe. If a man look upon the world not lightly or ignorantly, there was never any one so godless who did not experience an effect opposite to that which the many imagine. For they think that those who handle these matters by the help of astronomy, and the accompanying arts of demonstration, may become godless, because they see, as far as they can see, things happening by necessity, and not by an intelligent will accomplishing good.

If we mean our future guardians to regard the habit of quarrelling among themselves as of all things the basest, should any word be said to them of the wars in heaven, and of the plots and fightings of the gods against one another, for they are not true. No, we shall never mention the battles of the giants, or let them be embroidered on garments; and we shall be silent about the innumerable other quarrels of gods and heroes with their friends and relatives. If they would only believe us we would tell them that quarrelling is unholy, and that never up to this time has there been any quarrel between citizens; this is what old men and old women should being by telling children; and when they grow up, the poets also should be told to compose for them in a similar spirit.

Truth should be highly valued; if, as we were saying, a lie is useless to the gods, and useful only as a medicine to men, then the use of such medicines should be restricted to physicians; private individuals have no business with them.

In one place revolutionary philosophers went on strike because they got a reading list including Plato, Descartes and other bourgeois idiots, instead of relevant great philosophers like Che Guevara and Mao.

The direction in which education starts a man will determine his future life.

These ideas of planning [by dictators and would-be dictators] go back to Plato’s treatise on the form of the commonwealth. Plato was very outspoken. He planned a system ruled exclusively by philosophers. He wanted to eliminate all individual rights and decisions. Nobody should go anywhere, rest, sleep, eat, drink, wash, unless he was told to do so. Plato wanted to reduce persons to the status of pawns in his plan. What is needed is a dictator who appoints a philosopher as a kind of prime minister or president of the central board of production management. The program of all such consistent socialists—Plato and Hitler, for instance—planned also for the production of future socialists, the breeding and education of future members of society.
?During the 2300 years since Plato, very little opposition has been registered to his ideas. Not even by Kant. The psychological bias in favor of socialism must be taken into consideration in discussing Marxian ideas. This is not limited to those who call themselves Marxian.

Death is not the worst that can happen to men.

Beholding beauty with the eye of the mind, he will be enabled to bring forth, not images of beauty, but realities (for he has hold not of an image but of a reality), and bringing forth and nourishing true virtue to become the friend of God and be immortal, if mortal man may.

When there is an income tax, the just man will pay more and the unjust less on the same amount of income.

Since Plato’s Republic, politicians, intellectuals, and priests have been fascinated with the idea of “capturing” children for social engineering purposes.

Necessity is the mother of invention.

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.

Look, ye wretches, take your fill of the fair sight.

Man is a prisoner who has no right to open the door of his prison and run away... A man should wait, and not take his own life until God summons him.

[A] eugenist does not have to be a Darwinian. Plato, for example, was a eugenist thousands of years before Darwinism was thought of.