''-When i dream sometimes i remember how to fly. you just lift one leg, then you lift another leg, and you're not standing on anything, and you can fly. And then when i wake up i can't remember how to do it anymore.
-So what i want to know is, when i'm asleep, do i really remember how to fly? And forget how when i wake up? Or am i just dreaming i can fly?
-When you dream sometimes you remember. When you wake you always forget.
-But that's not fair...
Neil Gaiman 'The Sandman -- Brief Lives'