Reality is the cage of those who lack imagination.

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

[Children] are taught that it is a virtue to accept statements without adequate evidence, which leaves them a prey to quacks of every kind in later life, and makes it very difficult for them to accept the methods of thought which are successful in science.

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.

I think, however, that so long as our present economic and national systems continue, scientific research has little to fear.

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