As more people become more intelligent they care less for preachers and more for teachers.

Ignorance worships mystery; reason explains it; the one grovels, the other soars.

Would God give a bird wings and make it a crime to fly? Would he give me brains and make it a crime to think? Any God that would damn one of his children for the expression of his honest thought wouldn't make a decent thief. When I read a book and don't believe it, I ought to say so. I will do so and take the consequences like a man.

Let us agree not to step on each other’s feet.

Do not tell me that you have got to be rich! We have a false standard of greatness in the United States. We think here that a man must be great, that he must be notorious; that he must be extremely wealthy, or that his name must be upon the putrid lips of rumor. It is all a mistake. It is not necessary to be rich or to be great, or to be powerful, to be happy. The happy man is the successful man. Happiness is the legal tender of the soul.Joy is wealth.

Whenever a man believes that he has the exact truth from God, there is in that man no spirit of compromise. He has not the modesty born of the imperfections of human nature; he has the arrogance of theological certainty and the tyranny born of ignorant assurance. Believing himself to be the slave of God, he imitates his master, and of all tyrants the worst is a slave in power.

If a man wishes to have God recognized in the constitution of our country, let him read the history of the Inquisition, and let him remember that hundreds of millions of men, women, and children have been sacrificed to placate the wrath, or win the approbation of this god.