《列子·说符》
列子听说了这件事情，说： 假如天地间生长的万物，三年才长成一片叶子，那万物中有树叶的就很少了。
子列子闻之，曰： 使天地之生物，三年而成一叶，则物之叶者寡矣。
Liezi heard about this and said: If all things that grow in heaven and earth take three years to grow a single leaf, then there would be very few things in the world that have leaves.