The more the fruits of knowledge become accessible to men, the more widespread is the decline of religious belief.

If children could, if adults knew.

From error to error one discovers the entire truth.

It is a mistake to believe that science consists in nothing but conclusively proved propositions, and it is unjust to demand that it should. It is a demand made by those who feel a craving for authority in some form to replace the religious catechism by something else, even a scientific one.

If the truth of religious doctrines is dependent on an inner experience that bears witness to the truth, what is one to make of the many people who do not have that experience?

Neither in my private life nor in my writings, have I ever made a secret of being an out-and-out unbeliever.

The time comes when each of us has to give up as illusions the expectations which, in his youth, he pinned upon his fellow-men, and when he may learn how much difficulty and pain has been added to his life by their ill-will.