It is human nature to think wisely and act in an absurd fashion.

It is human nature to think wisely and act foolishly

We live too much in books and not enough in nature, and we are very much like the simpleton of a Pliny the Younger, who went on studying a Greek author while before his eyes Vesuvius was overwhelming five cities beneath the ashes

Nature, in her indifference, makes no distinction between good and evil.

If we're there, people will act differently; it's human nature.

We have drugs to make women speak, but none to keep them silent