Zhuangzi, also known as Chuang Tzu, was a Chinese sage who lived around the 4th Century BC. There is a famous parable of his in which he talks about dreaming he was a butterfly. It is a simple parable that requires no explanation:

Zhuangzi’s Butterfly Dream Parable

Once upon a time, I, Zhuangzi, 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 Zhuangzi.

Soon I awakened,
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.

Between a man and a butterfly,
there is necessarily a distinction.

The transition is called the transformation of material things.

Probably the only line that requires an explanation is the last one. I rather like the translation of the last line shown on this website: “This is called ‘Things Change.´”