Socrates on Knowledge

"It is necessary to learn geometry only so far as might enable a man to measure land for the purposes of buying and selling."

"Either knowledge is not to be attained at all, or if at all, after death. For then, and not til then, the soul will be in herself alone and without the body."

"You will know that the divine is so great and of such a nature that it sees and hears everything at once, is present everywhere, and is concerned with everything."

"There is only one good, knowledge, and one evil, ignorance."

"Each of these private teachers who work for pay ... inculcates nothing else than these opinions of the multitude which they opine when they are assembled and calls this knowledge wisdom."

"“To be sure, for he has never learnt to speak well."

"“Follow me, then, and learn."

"If I am to live longer, perhaps I must live out my old age, seeing and hearing less, understanding worse, coming to learn with more difficulty and to be more forgetful, and growing worse than those to whom I was once superior. Indeed, life would be unliveable, even if I did not notice the change. And if I see the change, how could life not be even more wretched and unpleasant?"

"If generation were in a straight line only, and there were no compensation or circle in nature, no turn or return into one another, then you know that all things would at last have the same form and pass into the same state, and there would be no more generation of them."

"When I was young, Cebes, I had a prodigious desire to know the department of philosophy which is called Natural Science; this appeared to me to have lofty aims, as being the science which has to do with the causes of things, and which teaches why a thing is, and is created and destroyed; and I always agitated myself with the consideration of such questions as these... I went on to examine the decay of them, and then to the study of the heaven and earth, and at last I concluded that I was wholly incapable of these inquiries... There was a time when I thought that I understood the meaning of greater and less pretty well... that ten is more than eight, and that two cubits are more than one, because two is twice one. I should be far from imagining... that I knew the cause of any of them, indeed I should, for I cannot satisfy myself that when one is added to one, the one to which the addition is made becomes two... nor can I understand how the division of one is the way to make two; for then a different cause would produce the same effect."

"And how is not this the most reprehensible ignorance, to think that one knows what one does not know? But I, O Athenians! in this, perhaps, differ from most men; and if I should say that I am in any thing wiser than another, it would be in this, that not having a competent knowledge of the things in Hades, I also think that I have not such knowledge."

"Socrates: Shall we set down astronomy among the objects of study? Glaucon: I think so, to know something about the seasons, the months and the years is of use for military purposes, as well as for agriculture and for navigation. Socrates: It amuses me to see how afraid you are, lest the common herd of people should accuse you of recommending useless studies."

"And this, Cebes, is the reason why the true lovers of knowledge are temperate and brave; and not for the reason that the world gives. For not in that way does the soul of a philosopher reason. ...Never fear, Simmias and Cebes, that a soul which has been thus nurtured and has had these pursuits, will at her departure from the body be scattered and blown away by the winds and be nowhere and nothing."

"If the knowledge which we acquired before birth was lost to us at birth, and afterwords by the use of the senses we recovered that which we previously knew, will not that which we call learning be a process of recovering our knowledge, and may not this be rightly termed recollection by us? ...Then, Simmias, our souls must have existed before they were in the form of man—without bodies, and must have had intelligence."

"If any man could arrive at the exterior limit, or take the wings of a bird and fly upward, like a fish who puts his head out and sees the world, he would see a world beyond; and, if the nature of man could sustain this sight, he would acknowledge that this was the place of the true heaven and the true light and the true stars. For this earth, and the stones, and the entire region which surrounds us, are spoilt and corroded..."

"If somebody asks them, Why, what evil does he practice or teach? they do not know, and cannot tell; but in order that they do not appear to be at a loss, they repeat the ready-made charges which are used against all philosophers about teaching things up in the clouds and under the earth, and having no gods, and making the worse appear the better cause; for they do not like to confess that their pretense of knowledge has been detected — which is the truth..."

"Let a man be of good cheer about his soul, who has cast away the pleasures and ornaments of the body as alien to him, and rather hurtful in their effects, and has followed after the pleasures of knowledge in this life; who has adorned the soul in her own proper jewels, which are temperance, and justice, and courage, and nobility, and truth—in these arrayed she is ready to go on her journey to the world below, when her time comes. You, Simmias and Cebes, and all other men, will depart at some time or other. Me already, as the tragic poet would say, the voice of fate calls."

"I have had no regular disciples: but if anyone likes to come and hear me while I am pursuing my mission, whether he be young or old, he may freely come. Nor do I converse with those who pay only, and not with those who do not pay; but anyone, whether he be rich or poor, may ask and answer me and listen to my words; and whether he turns out to be a bad man or a good one, that cannot be justly laid to my charge, as I never taught him anything. And if anyone says that he has ever learned or heard anything from me in private which all the world has not heard, I should like you to know that he is speaking an untruth."