In a start-up company, you basically throw out all assumptions every three weeks.

The final test of a gentleman is his respect for those who can be of no possible service to him.

A well-ordered life is like climbing a tower; the view halfway up is better than the view from the base, and it steadily becomes finer as the horizon expands.

Those who decide to use leisure as a means of mental development, who love good music, good books, good pictures, good plays, good company, good conversation - what are they? They are the happiest people in the world.

Whenever it is in any way possible, every boy and girl should choose as his life work some occupation which he should like to do anyhow, even if he did not need the money.

My religious faith remains in possession of the field only after prolonged civil war with my naturally skeptical mind.

God speaks to me not through the thunder and the earthquake, nor through the ocean and the stars, but through the Son of Man, and speaks in a language adapted to my imperfect sight and hearing.