Treat a friend as a person who may someday become your enemy; an enemy as a person who may someday become your friend.

To a mathematician the eleventh means only a single unit: to the bushman who cannot count further than his ten fingers it is an incalculable myriad.

You cannot be a hero without being a coward.

Those who admire modern civilization usually identify it with the steam engine and the electric telegraph.

We all go about longing for love: it is the first need of our natures, the loudest cry of our hearts.

We are compelled by the theory of God's already achieved perfection to make Him a devil as well as a god, because of the existenceof evil. The god of love, if omnipotent and omniscient, must be the god of cancer and epilepsy as well.... Whoever admits that anything living is evil must either believe that God is malignantly capable of creating evil, or else believe that God has made many mistakes in His attempts to make a perfect being.

People get tired of everything, and of nothing sooner than of what they most like.