The science of life is a superb and dazzlingly lighted hall which may be reached only by passing through a long and ghastly kitchen.

A great discovery is a fact whose appearance in science gives rise to shining ideas, whose light dispels many obscurities and shows us new paths.

Hatred is the most clear- sighted, next to genius.

Mediocre men often have the most acquired knowledge

The first requirement in using statistics is that the facts treated shall be reduced to comparable units.

First causes are outside the realm of science.

The experimenter who does not know what he is looking for will not understand what he finds.