Girls marry for love. Boys marry because of a chronic irritation that causes them to gravitate in the direction of objects with certain curvilinear properties.

Without love, intelligence is dangerous; without intelligence, love is not enough.

The Eskimos live among ice all their lives but have no single word for ice.

Psychosclerosis: the hardening of the attitude which causes a person to cease dreaming, seeing, thinking, and leading.

You certainly can't tell anything from the microscopic structure of the brain whether the person was an idiot or a genius.

The indications are that swearing preceded the development of cursing. That is, expletives, maledictions, exclamations, and imprecations of the immediately explosive or vituperative kind preceded the speechmaking and later rituals involved in the deliberate apportioning of the fate of an enemy. Swearing of the former variety is from the lips only, but the latter is from the heart. Damn it! is not that same as Damn you!

The scientist believes in proof without certainty, the bigot in certainty without proof.