He is unworthy of the name of man who is ignorant of the fact that the diagonal of a square is incommensurable with its side.

But at three, four, five, and even six years the childish nature will require sports; now is the time to get rid of self-will in him, punishing him, but not so as to disgrace him.

Let brother help brother.

Astronomy compels the soul to look upwards and leads us from this world to another.

The democratic youth lives along day by day, gratifying the desire that occurs to him, at one time drinking and listening to the flute, at another downing water and reducing, now practicing gymnastic, and again idling and neglecting everything; and sometimes spending his time as though he were occupied in philosophy.

Life must be lived as play, playing certain games, making sacrifices, singing and dancing, and then a man will be able to propitiate the gods.

In particular I may mention Sophocles the poet, who was once asked in my presence, How do you feel about love, Sophocles? are you still capable of it? to which he replied, Hush! if you please: to my great delight I have escaped from it, and feel as if I had escaped from a frantic and savage master. I thought then, as I do now, that he spoke wisely. For unquestionably old age brings us profound repose and freedom from this and other passions.