In order to know whether a human being is young or old, offer it food of different kinds at short intervals. If young, it will eat anything at any hour of the day or night.

Men are tattooed with their special beliefs like so many South Sea Islanders; but a real human heart with divine love in it beats with the same glow under all the patterns of all earth's thousand tribes.

Longevity is having a chronic disease - and taking care of it.

The joy of life is to put out one's power in some natural and useful or harmless way. There is no other. And the real misery is not to do this.

Most of us retain enough of the theological attitude to think that we are little gods.

The ideas of the classics, so far as living, are our commonplaces. It is the modern books that give us the latest and most profound conceptions. It seems to me rather a lazy makeshift to mumble over the familiar.

Blood is a destiny. One's genius descends in the stream from long lines of ancestry.