I will give up my belief in evolution if someone finds a fossil rabbit in the Precambrian.

You can drop a mouse down a thousand-yard mine shaft and, on arriving at the bottom, it gets a slight shock and walks away. A rat would probably be killed, though it can fall safely from the eleventh story of a building, a man is broken, a horse splashes.

The world shall perish not for lack of wonders, but for lack of wonder

The conclusion forced upon me in the course of a life devoted to natural science is that the universe as it is assumed to be in physical science is only an idealized world, while the real universe is the spiritual universe in which spiritual values count for everything.

I have never yet met a healthy person who worried very much about his health, or a really good person who worried much about his own soul.

Man armed with science is like a baby with a box of matches.

If human beings could be propagated by cutting, like apple trees, aristocracy would be biologically sound.