"We imagine that waking-life is real and that dream-life is unreal, but there does not seem to be any evidence for this belief. Chuang Tzu, in the third century B.C., put it in an amusing way; having dreamed that he was a butterfly flitting from flower to flower, he stated that he was now wondering whether he was then a man dreaming he was a butterfly or whether he was now a butterfly dreaming he was a man. "

- Wei Wu Wei, Fingers Pointing Toward the Moon