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

We do not know, in most cases, how far social failure and success are due to heredity, and how far to environment. But environment is the easier of the two to improve.

So far from being an isolated phenomenon the late war is only an example of the disruptive result that we may constantly expect from the progress of science.

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

There are 400,000 species of beetles on this planet, but only 8,000 species of mammals.

The idea of protoplasm, which was really a name for our ignorance, [is] only a little less misleading than the expression "Vital force".

There can be no truce between science and religion.