Religious doctrines … are all illusions, they do not admit of proof, and no one can be compelled to consider them as true or to believe in them.

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

Just as no one can be forced into belief, so no one can be forced into unbelief

He does not believe that does not live according to his belief.

Just as no one can be forced into belief, so no one can be forced into unbelief.

Religious ideas have sprung from the same need as all the other achievements of culture: from the necessity for defending itself against the crushing supremacy of nature