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

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

Now, if the cooperation of some thousands of millions of cells in our brain can produce our consciousness, a true singularity, the idea becomes vastly more plausible that the cooperation of humanity, or some sections of it, may determine what Comte calls a Great Being.

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.

A time will however come (as I believe) when physiology will invade and destroy mathematical physics, as the latter has destroyed geometry.

The advance of scientific knowledge does not seem to make either our universe or our inner life in it any less mysterious.