Comparison between human and disobey Tao cannot be lack of water lack of mankind cannot be friends. If there are no animals in this world live on Earth balance between humans and animals, are missing.
Compare the relationships between humans and turtles. Turtles can not get dehydrated man can not lack friends as well. If the world no animals living on the balance between man and animal is missing.
Comparison of the relationship between the man and the turtle. The turtle can not lack of water, human can't lack of friends as well. If this world no animals live on earth, the balance between human and animals are missing!