To mention one thing out of a thousand, take this. I have seen a picture in which the seven-headed beast of the Apocalypse was included among the animals in Noah's Ark, and duly provided with a seven-headed wife to assist him in propagating that important race to be in time for the Apocalypse. If Voltaire had thought of that, he would certainly have said it. But the restrictions of these men were restrictions of external discipline: they were not like ours, restrictions of mood. It might be a question how far people should be allowed to make jokes about Christianity; but there was no doubt that they should be allowed to feel jokes about it. There was no question of that merely impressional theory that we should look through only one peep-hole at a time. Their souls were at least stereoscopic. They had nothing to do with that pictorial impressionism which means closing one eye. They had nothing to do with that philosophical impressionism which means being half-witted.
-Lunacy and Letters (1958)