以智慧而言，人类与动物也许不同，但相当明显的是动物拥有丰富的感情，牠们会快乐也会痛。我们很容易忘了汉堡是来自牛这中间的关联。但我强迫我自己每当我吃汉堡时要明瞭这个事实，就是，一只牛已经为此停止呼吸，不能再叫与走路了。"Intellectually,humanbeingsandanimalsmaybedifferent,butit'sprettyobviousthatanimalshavearichemotionallifeandthattheyfeeljoyandpain.It'seasytoforgettheconnectionbetweenahamburgerandthecowitcamefrom.ButIforcedmyselftoacknowledgethefactthateverytimeIateahamburger,acowhadceasedtobreatheandmooandwalkaround."(TeenPeople)