An abundance of some good things is perfectly compatible with the scarcity of others; that life is everywhere precarious, man everywhere small.

Life is very persistent and very ingenious in seizing every opportunity.

Security depends not so much upon how much you have, as upon how much you can do without.

It is not ignorance but knowledge which is the mother of wonder.

Two-legged creatures we are supposed to love as we love ourselves. The four-legged, also, can come to seem pretty important. But six legs are too many from the human standpoint.

The impulse to mar and to destroy is as ancient and almost as nearly universal as the impulse to create. The one is an easier way than the other of demonstrating power.

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.