Chuang Tzu was a leading Taoist thinker. His teachings are collected in a book, Chuang-tzu. This story appears in Chuang-tzu.
Once upon a time, I, Chuang Tzu, dreamt I was a butterfly, fluttering hither and thither, to all intents and purposes a butterfly. I was conscious only of my happiness as a butterfly, unaware that I was Tzu. Soon I awoke, and there I was, veritably myself again. Now I do not know whether I was then a man dreaming I was a butterfly, or whether I am now a butterfly, dreaming I am a man.
Explain what you think this story means.