I have not the slightest confidence in 'spiritual manifestations.'

He who treats his friends and enemies alike, has neither love nor justice.

A miracle is the badge and brand of fraud. ... No intelligent, honest man ever pretended to perform a miracle, and never will.

The notion that faith in Christ is to be rewarded by an eternity of bliss, while a dependence upon reason, observation, and experience merits everlasting pain, is too absurd for refutation, and can be believed only by that unhappy mixture of insanity and ignorance, called faith.

Only those who live on the labor of the ignorant are the enemies of science. Real love and real religion are in no danger from science. The more we know the safer all good things are.

Sacred are the lips from which has issued only truth.

Secularism is a religion, a religion that is understood. It has no mysteries, no mumblings, no priests, no ceremonies, no falsehoods, no miracles, and no persecutions.