A fairly bright boy is far more intelligent and far better company than the average adult.

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

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

While I do not suggest that humanity will ever be able to dispense with its martyrs, I cannot avoid the suspicion that with a little more thought and a little less belief their number may be substantially reduced.

This is my prediction for the future: Whatever hasn't happened will happen, and no one will be safe from it.

It was a reaction from the old idea of "protoplasm", a name which was a mere repository of ignorance.

And if we must educate our poets and artists in science, we must educate our masters, labour and capital, in art.