For those who believe, no proof is necessary. For those who don't believe, no proof is possible.

I find it difficult to believe that words have no meaning in themselves, hard as I try. Habits of a lifetime are not lightly thrown aside.

Individual talent is too sporadic and unpredictable to be allowed any important part in the organization society. Social systems which endure are built on the average person who can be trained to occupy any position adequately if not brilliantly.

Common sense is what tells us the earth is flat.

Certain anthropologists hold that man, having discovered tools, ceased to evolve biologically. Animals, never having discovered them, continue to fashion drills out of their beaks, oars out of their hind feet, wings out of their forefeet, suits of armor out of their hides, levers out of their horns, saws out of their teeth. Whether this be true or not, all authorities agree that man is the tool-using animal. It sets him off from the rest of the animal kingdom as drastically as does speech.

The best mental effort in the game of business is concentrated on the major problem of securing the consumer's dollar before the other fellow gets it.

Your liberty to swing your arms ends where my nose begins.