From error to error one discovers the entire truth.

None believes in his own death. In the unconscious everyone is convinced of his own immortality.

Civilization has little to fear from educated people and brain-workers. In them the replacement of religious motives for civilized behaviors by other, secular motives, would proceed unobtrusively. . . .

We are what we are because we have been what we have been.

In the long run, nothing can withstand reason and experience, and the contradiction religion offers to both is palpable.

From error to error one discovers the entire truth.

It is a predisposition of human nature to consider an unpleasant idea untrue, and then it is easy to find arguments against it.