A long habit of not thinking a thing wrong, gives it a superficial appearance of being right, and raises at first a formidable outcry in defense of custom. But the tumult soon subsides. Time makes more converts than reason.

Science is nothing but trained and organized common sense differing from the latter only as a veteran may differ from a raw recruit: and its methods differ from those of common sense only as far as the guardsman's cut and thrust differ from the manne

Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic.

I can never fear that things will go far wrong where common sense has fair play.

Our goal isn't to dumb down the rules. It's to use some common sense in what we regulate.

Common sense is not so common.