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

In the long run our boasted control of nature is a delusion.

The famous balance of nature is the most extraordinary of all cybernetic systems. Left to itself, it is always self-regulated.

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

Both the cockroach and the bird would get along very well without us, although the cockroach would miss us most.

The mind leaps, and leaps perhaps with a sort of elation, through the immensities of space, but the spirit, frightened and cold, longs to have once more above its head the inverted bowl beyond which may lie whatever paradise its desires may create.

Long before I ever saw the desert I was aware of the mystical overtones which the observation of nature made audible to me. But I have never been more frequently or more vividly aware of them than in connection with the desert phenomena.