“You are free in our time to say that God does not exist; you are free to say that He exists and is evil; you are free to say (like poor old Renan) that He would like to exist if He could. You may talk of God as a metaphor or mystification; you may water Him down with gallons of long words, or boil Him to the rags of metaphysics; and it is not merely that nobody punishes, but nobody protests. But if you speak of God as a fact, as a thing like a tiger, as a reason for changing one’s conduct, then the modern world will stop you somehow if it can. We are long past talking about whether an unbeliever should be punished for being irreverent. It is now thought irreverent to be a believer.”
(1909). The Philosopher. George Bernard Shaw (p. 234). New York: John Lane Company.
The text of this book can be found at http://www.gutenberg.org/files/19535/19535-h/19535-h.htm