The more we realize our minuteness and our impotence in the face of cosmic forces, the more amazing becomes what human beings have achieved.

Dogma demands authority, rather than intelligent thought, as the source of opinion; it requires persecution of heretics and hostility to unbelievers; it asks of its disciples that they should inhibit natural kindliness in favor of systematic hatred.

A marriage is likely to be called happy if neither party ever expected to get much happiness out of it.

Conquer the world by intelligence, and not merely by being slavishly subdued by the terror that comes from it.

Love, children, and work, are the great sources of fertilizing contact between the individual and the rest of the world.

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 essential characteristic of scientific technique is that it proceeds from experiment, not from tradition. The experimental habit of mind is a difficult one for most people to maintain; indeed, the science of one generation has already become the tradition of the next