Keeping your body healthy is an expression of gratitude to the whole cosmos—the trees, the clouds, everything.
In the case of good books, the point is not how many of them you can get through, but rather how many can get through to you.
If writers were good businessmen, they’d have too much sense to be writers.
It is the mark of an educated mind to be able to entertain a thought without accepting it.
Poetry is when emotion has found its thought and the thought has found words.
One day’s exposure to mountains is better than cartloads of books. See how willingly Nature poses herself upon photographers’ plates. No earthly chemicals are so sensitive as those of the human soul.
Several excuses are always less convincing than one.
Ideas are like rabbits. You get a couple and learn how to handle them, and pretty soon you have a dozen.
A vigorous five-mile walk will do more good for an unhappy but otherwise healthy adult than all the medicine and psychology in the world.
Perpetual optimism is a force multiplier.