When Thales was asked what was difficult, he said, To know one's self. And what was easy, To advise another.

Pythagoras used to say that he had received as a gift from Mercury the perpetual transmigration of his soul, so that it was constantly transmigrating and passing into all sorts of plants or animals.

Whichever you do, you will repent it.

A man once asked Diogenes what was the proper time for supper, and he made answer, "If you are a rich man, whenever you please; and if you are a poor man, whenever you can.

Diogenes would frequently praise those who were about to marry, and yet did not marry.

Xenophanes speaks thus:-And no man knows distinctly anything,And no man ever will.

Aristippus said that a wise man's country was the world.