If a man states that a wing is necessarily relative to a bird, the connexion between these two will not be reciprocal, for it will not be possible to say that a bird is a bird by reason of its wings.

• 如果一个人说，翅膀是一只鸟的必然相关者，那么二者之间的连接就不是互相的，因为鸟之为鸟的不能说是依据其翅膀。