Freedom in general may be defined as the absence of obstacles to the realization of desires.

It's coexistence or no existence.

The Ten Commandments should be headed like an examination paper: No more than six to be attempted.

Religion may in most of its forms be defined as the belief that the gods are on the side of the government.

Zeno was concerned with three problems... These are the problem of the infinitesimal, the infinite, and continuity.

Change is one thing, progress is another.

The first man who said "fire burns" was employing scientific method, at any rate if he had allowed himself to be burnt several times. This man had already passed through the two stages of observation and generalization. He had not, however, what scientific technique demands - a careful choice of significant facts on the one hand, and, on the other hand, various means of arriving at laws otherwise than my mere generalization.