"Lie down," he said, "or sometimes sit, but for sure in a comfortable position. Then just rest and do nothing for a while. You'll stop being aware of what's going on around you, and you'll become dormant and forget the world around you, and soon you'll have impossible visions. Until you wake back to awareness, you'll think those visions are literal truth. And that is how to dream!"
He seemed very proud of himself, and he's a really nice guy. How do I tell him that everyone already knows how to do this?