Tao Te Ching

“Chuang-tzu’s wife died. When Hui-tzu came to offer his condolences, he found him pounding on a tub and singing… Chuang-tzu said, ‘The same process that brought her to birth, in time brought her to death, as naturally as fall turns into winter and spring into summer... if I went around wailing and pounding my chest, it would only show that I didn’t understand the first thing about reality.’”

— Chuang Tzu 莊周 369 – 286 BCE
(Zhuangzi)