The title of my memoir: Butterfly Dreams resulted from seeing this sculpture in the Hua Dao Eco-Village near Chengdu China.

Once Zhuang Zhou dreamed he was a butterfly, a fluttering butterfly.
What fun he had, doing as he pleased! He did not know he was Zhou.
Suddenly he woke up and found himself to be Zhou. He did not know
whether Zhou had dreamed he was a butterfly, or a butterfly had
dreamed he was Zhou. Between Zhou and the butterfly there must be
some distinction. This is what is meant by the transformation of things.

— Ancient Taoist text, as it appears in William Edward Soothill’s book
The Three Religions of China: Lectures Delivered at Oxford (1913), p. 75