More men have become great through practice than by nature.

It is hard to fight against anger: to master it is the mark of a rational man.

The pride of youth is in strength and beauty, the pride of old age is in discretion.

If your desires are not great, a little will seem much to you; for small appetite makes poverty equivalent to wealth.

We think there is color, we think there is sweet, we think there is bitter, but in reality there are atoms and a void.

Now as of old the gods give men all good things, excepting only those that are baneful and injurious and useless. These, now as of old, are not gifts of the gods: men stumble into them themselves because of their own blindness and folly.

I am the most travelled of all my contemporaries; I have extended my field of enquiry wider than anybody else, I have seen more countries and climes, and have heard more speeches of learned men. No one has surpassed me in the composition of lines, according to demonstration, not even the Egyptian knotters of ropes, or geometers.