If religious beliefs and opinions are found contrary to the standards of science they are mere superstitions and imaginations.

It is time, therefore, to abandon the superstition that natural science cannot be regarded as logically respectable until philosophers have solved the problem of induction. The problem of induction is, roughly speaking, the problem of finding a way to prove that certain empirical generalizations which are derived from past experience will hold good also in the future.

As for omens, there is no such thing as an omen. Destiny does not send us heralds. She is too wise or too cruel for that.

The best road to correct reasoning is by physical science; the way to trace effects to causes is through physical science; the only corrective, therefore, of superstition is physical science.

Conscience without judgment is superstition.

Although I myself don't go to church or synagogue, I do, whether it's superstition or whatever, pray every time I get on a plane. I just automatically do it. I say the same thing every time.

Go get yourself crucified and then rise on the third day.

To get any reason out of the mass of incongruity we call human life, we have to transcend our reason, but we must do it scientifically, slowly, by regular practice, and we must cast off all superstition.

Stand up and be strong! No fear. No superstition. Face the truth as it is!

At any given moment, public opinion is a chaos of superstition, misinformation, and prejudice.