We need sometimes to escape into open solitudes, into aimlessness, into the moral holiday of running some pure hazard in order to sharpen the edge of life, to taste hardship, and to be compelled to work desperately for a moment at no matter what.

Nature is like a beautiful woman that may be as delightfully and as truly known at a certain distance as upon a closer view; as to knowing her through and through; that is nonsense in both cases, and might not reward our pains.

To fight is a radical instinct; if men have nothing else to fight over they will fight over words, fancies, or women, or they will fight because they dislike each other's looks, or because they have met walking in opposite directions.

The universe, as far as we can observe it, is a wonderful and immense engine.... If we dramatize its life and conceive its spirit, we are filled with wonder, terror and amusement, so magnificent is the spirit.

I like to walk about among the beautiful things that adorn the world; but private wealth I should decline, or any sort of personal possessions, because they would take away my liberty.

Those who speak most of progress measure it by quantity and not by quality.

If clearness about things produces a fundamental despair, a fundamental despair in turn produces a remarkable clearness or even playfulness about ordinary matters.