What a man knows is everywhere at war with what he wants.

There is no such thing as a dangerous woman; there are only susceptible men.

When, in the present world, men behave well, that is no doubt sometimes because they are creatures of habit as well as, sometimes, because they are reasonable.

The grand paradox of our society is this: we magnify man’s right but we minimize his capacities.

Not to have known - as most men have not - either the mountain or the desert is not to have known one's self. Not to have known one's self is to have known no one.

Poetry, mythology, and religion represent the world as man would like to have it, while science represents the world as he gradually comes to discover it.

Man is the only one in whom the instinct of life falters long enough to enable it to ask the question "Why?

A tragic writer does not have to believe in God, but he must believe in man.

Man is, perhaps, no more prone to war than he used to be and no more inclined to commit other evil deeds. But a given amount of ill will or folly will go further than it used to.