《淮南子·说林训》
橘子和柚子都有自己的产地，荻草和芦苇各有自己的丛生处，兽类脚爪相同的在一起从游，鸟类翅翼相同的在一起翱翔。
橘袖有乡，雚苇有丛。兽同足者相从游，鸟同翼者相从翔。
The orange and the pomelo have their own place of growth; the thatch grass and the reed have their own place of gathering; the beasts with the same feet roam together; the birds with the same wings fly together.