Gems of Chinese Literature/Chuang Tzŭ-Dream and Reality
Once upon a time I dreamt I was a butterfly, fluttering hither and thither, to all intents and purposes a butterfly. I was conscious only of following my fancies (as a butterfly), and was unconscious of my individuality as a man. Suddenly, I awaked; and there I lay, myself again. I do not know whether I was then dreaming I was a butterfly, or whether I am now a butterfly dreaming that it is a man. Between a man and a butterfly there is necessarily a barrier; and the transition is called Metempsychosis.