The human mind can appreciate the One only by seeing it first in the Many.

Man is, perhaps, no more prone to war than he used to be and no more inclined to commit other evil deeds. But a given amount of ill will or folly will go further than it used to.

We have not merely escaped from something but into something... We have joined the greatest of all communities, which is not that of man alone but of everything which shares with us the great adventure of being alive.

The cockroach and the bird were both here long before we were. Both could.

Poetry, mythology, and religion represent the world as man would like to have it, while science represents the world as he gradually comes to discover it.

To those who study her, Nature reveals herself as extraordinarily fertile and ingenious in devising means, but she has no ends which the human mind has been able to discover or comprehend.

A humanist is anyone who rejects the attempt to describe or account for man wholly on the basis of physics, chemistry or animal behaviour.