I have spent most of my life worrying about things that have never happened.

Such is professional jealousy; a scientist will never show any kindness for a theory which he did not start himself.

We recognize that there are no trivial occurrences in life if we get the right focus on them.

A thing long expected takes the form of the unexpected when at last it comes.

Man is the only Patriot. He sets himself apart in his own country, under his own flag, and sneers at the other nations, and keeps multitudinous uniformed assassins on hand at heavy expense to grab slices of other people's countries, and keep them from grabbing slices of his. And in the intervals between campaigns he washes the blood off his hands and works for the universal brotherhood of man - with his mouth.

Adam did not want the apple for the apple's sake; he wanted it because it was forbidden.

Virtue has never been as respectable as money.