I wish I could make you see how much fuller the life I offer you is than anything you have a conception of. I wish I could make you see how exciting the life of the spirit is and how rich in experience. It's illimitable. It's such a happy life. There's only one thing like it, when you're up in a plane by yourself, high, high, and only infinity surrounds you. You're intoxicated by the boundless space.

The Razor's Edge (ed. 1944)