《礼记·礼运》
畜养了龙，群鱼就不会乱窜了；畜养了凤，群鸟就不会乱飞了；畜养了麟，群兽就不会乱逃了；畜养了龟，用来占卜人事，就不会有差错了。
故龙以为畜，故鱼鲔不淰；凤以为畜，故鸟不獝；麟以为畜，故兽不狘；龟以为畜，故人情不失。
Raising dragons will keep schools of fish from scattering; raising phoenix will keep flocks of birds from flying away in disorder; raising qilin will keep herds of animals from fleeing in disorder; raising turtles to divine human affairs will not have errors.