The learned tradition is not concerned with truth, but with the learned adjustment of learned statements of antecedent learned people.

It is the business of the future to be dangerous.

Religion is the last refuge of human savagery.

The difference between ancients and moderns is that the ancients asked what have we experienced, and moderns asked what can we experience.

Common sense is genius in homespun.

Inventive genius requires pleasurable mental activity as a condition for its vigorous exercise. "Necessity is the mother of invention" is a silly proverb. "Necessity is the mother of futile dodges" is much closer to the truth. The basis of growth of modern invention is science, and science is almost wholly the outgrowth of pleasurable intellectual curiosity.

Mathematics as a science, commenced when first someone, probably a Greek, proved propositions about "any" things or about "some" things, without specifications of definite particular things.