The most exquisite pleasure is giving pleasure to others.

Cunning is none of the best nor worst qualities; it floats between virtue and vice; there is scarce any exigence where it may not, and perhaps ought not to be supplied by prudence.

Every man is valued in this world as he shows by his conduct that he wishes to be valued.

Logic is the technique by which we add conviction to truth.

We seldom repent talking little, but very often talking too much.

The very essence of politeness seems to be to take care that by our words and actions we make other people pleased with us as well as with themselves.

Everything has been said, and we have come too late, now that men have been living and thinking for seven thousand years and more.