Adam knew Eve his wife and she conceived. It is a pity that this is still the only knowledge of their wives at which some men seem to arrive.

Metaphysics is the finding of bad reasons for what we believe on instinct.

The secret of happiness is to admire without desiring. And that is not happiness.

Up to a certain point every man is what he thinks he is.

The one self- knowledge worth having is to know one's own mind.

There are persons who, when they cease to shock us, cease to interest us.

It is good to know what a man is, and also what the world takes him for. But you do not understand him until you have learnt how he understands himself.