We must repay goodness and wickedness: but why exactly to the person who has done us a good or a wicked turn?

Beware of spitting against the wind!

Sleep is no mean art.

Knowing things halfway is a greater success than knowing things completely: it takes things to be simpler than they really are andso makes its opinions more easily understandable and persuasive.

The refinement of morality increases together with the refinement of fear. Today the fear of disagreeable feelings in other people is almost the strongest of our own disagreeable feelings.

I have never come across someone who could inspire more respect than the Greek philosophers.

When art dresses itself in the most worn-out material it is most easily recognized as art.