After you understand about the sun and the stars and the rotation of the earth, you may still miss the radiance of the sunset.

The motive of success is not enough.

Our rate of progress is such that an individual human being, of ordinary length of life, will be called on to face novel situations which find no parallel in his past. The fixed person, for the fixed duties, who, in older societies was such a godsend, in the future will be a public danger.

There are no whole truths: All truths are half-truths.

In the history of the world the prize has not gone to those species which specialized in methods of violence, or even in defensive armor. In fact, nature began with producing animals encased in hard shells for defense against the ill of life. But smaller animals, without external armor, warm-blooded, sensitive, alert, have cleared those monsters off the face of the earth.

Religion is what a person does in his solitariness.

Great dreamers' dreams are never fulfilled, they are always transcended.