Take from the church the miraculous, the supernatural, the incomprehensible, the unreasonable, the impossible, the unknowable, the absurd, and nothing but a vacuum remains.

Age after age, the strong have trampled upon the weak; the crafty and heartless have ensnared and enslaved the simple and innocent, and nowhere, in all the annals of mankind, has any god succored the oppressed

He who dishonors himself [by lying about his opinions] for the sake of being honored by others will find that two mistakes have been made - one by himself, and the other, by the people.

The mechanic, when a wheel refuses to turn, never thinks of dropping on his knees and asking the assistance of some divine power. He knows there is a reason. He knows that something is too large or too small; that there is something wrong with his machine; and he goes to work and he makes it larger or smaller, here or there, until the wheel will turn.

There is something wrong in a government where they who do the most have the least. There is something wrong when honesty wears a rag, and rascality a robe; when the loving, the tender, east a crust, while the infamous sit at banquets.

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.

Blasphemy is what an old dogma screams at a new truth.