都是出卖，卖给中原各国也可以，何必非要卖给越国呢？ 

The more we learn of the true nature of non-human animals, especially those with complex brains and corresponding complex social behaviour, the more ethical concerns are raised regarding their use in the service of man—whether this be in entertainment, as ‘pets,’ for food, in research laboratories or any of the other uses to which we subject them.

Only he who desires is amiable and not he who is satiated.

有用是这些老人曾经对自己最好的希望，而无目的是他们最深的恐惧。