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.

Don't you know that if people could bottle the air they would? Don't you know that there would be an American Air-bottling Association? And don't you know that they would allow thousands and millions to die for want of breath, if they could not pay for air? I am not blaming anybody. I am just telling how it is.

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.

The history of intellectual progress is written in the lives of infidels.

The agnostic does not simply say, "l do not know." He goes another step, and he says, with great emphasis, that you do not know. He insists that you are trading on the ignorance of others, and on the fear of others. He is not satisfied with saying that you do not know, -- he demonstrates that you do not know, and he drives you from the field of fact -- he drives you from the realm of reason -- he drives you from the light, into the darkness of conjecture -- into the world of dreams and shadows, and he compels you to say, at last, that your faith has no foundation in fact.

Our hope of immortality does not come from any religions, but nearly all religions come from that hope.

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.