History had a slow pulse; man counted in years, history in generations

Scientists are peeping toms at the keyhole of eternity.

Space-ships and time machines are no escape from the human condition.

Somebody once asked Niels Bohr why he had a horseshoe hanging above the front door of his house. Surely you, a world famous physicist, can't really believe that hanging a horseshoe above your door brings you luck? Of course not, Bohr replied, but I have been reliably informed that it will bring me luck whether I believe in it or not.

The principle mark of genius is not perfection but originality, the opening of new frontiers.

One may not regard the world as a sort of metaphysical brothel for emotions.

The thing represented had to pass through two distorting lenses: the artist's mind, and his medium of expression, before it emerged as a man-made dream - the two, of course, being intimately connected and interacting with each other.