Happiness is itself a kind of gratitude.

Happiness is a kind of gratitude and vice versa.

We need some contact with the things we sprang from. We need nature at least as a part of the context of our lives. Without cities we cannot be civilized. Without nature, without wilderness even, we are compelled to renounce an important part of our heritage.

Rhetoric takes no real account of the art in literature and morality takes no account of the art in life.

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

Man is the only one in whom the instinct of life falters long enough to enable it to ask the question "Why?

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.