The ministers, who preached at these revivals, were in earnest. They were zealous and sincere. They were not philosophers. To them science was the name of a vague dread - a dangerous enemy. They did not know much, but they believed a great deal.

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.

A man is not moral because he is obedient through fear or ignorance. Morality lives in the realm of perceived obligation.

There is no harmony between religion and science. When science was a child, religion sought to strangle it in the cradle. Now that science has attained its youth, and superstition is in its dotage, the trembling, palsied wreck says to the athlete: "Let us be friends."

The man who accepts opinions because they have been entertained by distinguished people, is a mental snob.

Our ignorance is God; what we know is science. When we abandon the doctrine that some infinite being created matter and force, and enacted a code of laws for their government ... the real priest will then be, not the mouth-piece of some pretended deity, but the interpreter of nature.

Epithets are not arguments. Abuse does not persuade.