Anything that can be laughed out of this world ought not to stay in it. - Robert Green Ingersoll

There is, however, no propriety in wasting any time about the science of metaphysics. I will give you my definition of metaphysics: Two fools get together; each admits what neither can prove, and thereupon both of them say, “hence we infer.” That is all there is of metaphysics.

The night of the Middle Ages lasted for a thousand years. The first star that enriched the horizon of this universal gloom was Giordano Bruno. He was the herald of the dawn.

Superstition is the child of ignorance and fear.