We have been cocksure of many things that were not so.

No generalization is wholly true—not even this one.

General propositions do not decide concrete cases. The decision will depend on a judgment or intuition more subtle than any articulate major premise.

There is something frightful in the way in which not only characteristic qualities, but particular manifestations of them, are repeated from generation to generation.

A man's opinions are generally of much more value than his arguments.

Science ... in other words, knowledge-is not the enemy of religion; for, if so, then religion would mean ignorance. But it is often the antagonist of school-divinity.

We should be eternally vigilant against attempts to check the expression of opinions that we loathe.