We need not only a purpose in life to give meaning to our existence but also something to give meaning to our suffering. We need as much something to suffer for as something to live for.

Man was nature's mistake she neglected to finish him and she has never ceased paying for her mistake.

A dissenting minority feels free only when it can impose its will on the majority: what it abominates most is the dissent of the majority.

A nation without dregs and malcontents is orderly, peaceful and pleasant, but perhaps without the seed of things to come.

Radicalism itself ceases to be radical when absorbed mainly in preserving its control over a society or an economy.

One word characterizes the most strenuous of the efforts for the advancement of science that I have made perservereingly during fifty-five years; that word is failure

We have perhaps a natural fear of ends. We would rather be always on the way than arrive. Given the means, we hang on to them and often forget the ends.