The scientist collects crude facts, but he stores only what he has converted them into: laws. Laws are the body of science. Laws are what it is a scientist's business to come at. Laws are what a master-scientist has to teach. Laws are what a pupil-scientist has to learn.

The New Leviathan: Or Man, Society, Civilization and Barbarism, Part II, Chapter XXXI, aphorism 31.28 (p. 248), At The Clarendon Press. 1942