It’s always easy to explain the unknown by postulating a superhuman and arbitrary will. - Isaac Asimov

That's not the proof I want.' 'You'll have such proof as exists. You are the only one responsible for your own wants.

I don't know anything but the simplest rules of English grammar, and I seldom consciously apply them. Nevertheless, I instinctively write correctly and, I like to think, in an interesting fashion. I know when something sounds right and when it doesn't, and I can tell the difference without hesitation, even when writing at breakneck speed. How do I do this? I haven't the faintest idea.

The elevator was of the new sort that ran by gravitic repulsion. Gaal entered and others flowed in behind him. The operator closed a contact. For a moment, Gaal felt suspended in space as gravity switched to zero, and then he had weight again in small measure as the elevator accelerated upward. Deceleration followed and his feet left the floor. He squawked against his will. The operator called out, "Tuck your feet under the railing. Can't you read the sign?"