All the professors in all the religious colleges in this country rolled into one, would not equal Charles Darwin.

If abuses are destroyed, man must destroy them. If slaves are freed, man must free them. If new truths are discovered, man must discover them. If the naked are clothed; if the hungry are fed; if justice is done; if labor is rewarded; if superstition is driven from the mind; if the defenseless are protected, and if the right finally triumphs, all must be the work of man. The grand victories of the future must be won by man, and by man alone.

If the world ever advances beyond what it is today, it must be led by men who express their real opinions.

No one, in the world's whole history, ever attempted to substantiate a truth by a miracle. Truth scorns the assistance of miracle. Nothing but falsehood ever attested itself by signs and wonders. No miracle ever was performed, and no sane man ever thought he had performed one, and until one is performed, there can be no evidence of the existence of any power superior to, and independent of nature.

Religion supports nobody. It has to be supported. It produces no wheat, no corn; it ploughs no land; it fells no forests. It is a perpetual mendicant. It lives on the labors of others, and then has the arrogance to pretend that it supports the giver.

Liberty is the breath of progress.

The Catholic Church is a thousand times better than your Protestant Church upon that question [of damnation]. The Catholic Church believes in purgatory - that is, a place where a fellow can get a chance to make a motion for a new trial.