Existentialism isn't so atheistic that it wears itself out showing that God doesn't exist. Rather, it declares that even if God did exist, that would change nothing.
All I say is that I think it is damned unlikely that anything like a central cosmic will, a spirit world, or an eternal survival of personality exist. They are the most preposterous and unjustified of all the guesses which can be made about the universe, and I am not enough of a hair-splitter to pretend that I don't regard them as arrant and negligible moonshine. In theory I am an agnostic, but pending the appearance of radical evidence I must be classed, practically and provisionally, as an atheist.
I received your letter of June 10th. I have never talked to a Jesuit priest in my life and I am astonished by the audacity to tell such lies about me. From the viewpoint of a Jesuit priest I am, of course, and have always been an atheist.
The essence of religious feeling does not come under any sort of reasoning or atheism, and has nothing to do with any crimes or misdemeanors. There is something else here, and there will always be something else - something that the atheists will for ever slur over; they will always be talking of something else.
I would believe any religion that could prove it had existed since the beginning of the world. But when I see Socrates, Plato, Moses, and Mohammed I do not think there is such a one. All religions owe their origin to man.
A man that is endued with the powers of reason, by which he is capable of knowing, serving, glorifying, and enjoying his Maker, and yet lives without God in the world, is certainly the most despicable and the most miserable animal under the sun.
We should foster a culture in which people's private religious beliefs, including atheists and agnostics, are respected. And that's the kind of culture that I think allows all of us, then, to believe what we want. That's freedom of conscience. That's what our Constitution guarantees.
The easiest way to get a reputation is to go outside the fold, shout around for a few years as a violent atheist or a dangerous radical, and then crawl back to the shelter.
The politicians and the religious leaders and the weapons scientists have been at it for a long time and they've made a thorough mess of it. I mean, we're in deep trouble.