The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as poetry
The secret of happiness is this: let your interests be as wide as possible, and let your reactions to the things and persons that interest you be as far as possible friendly rather than hostile
The point of philosophy is to start with something so simple as not to seem worth stating, and to end with something so paradoxical that no one will believe it
The most savage controversies are those about matters as to which there is no good evidence either way. Persecution is used in theology, not in arithmetic
On Destiny: "Our destiny exercises its influence over us even when, as yet, we have not learned its nature: it is our future that lays down the law of our today."
Human, All Too Human