" As far as the mode of ignorance is concerned, the performer is without knowledge, and therefore all his activities result in present misery, and afterwards he will go on toward animal life. Animal life is always miserable, although, under the spell of the illusory energy, māyā, the animals do not understand this. Slaughtering poor animals is also due to the mode of ignorance. The animal killers do not know that in the future the animal will have a body suitable to kill them. That is the law of nature. In human society, if one kills a man he has to be hanged. That is the law of the state. Because of ignorance, people do not perceive that there is a complete state controlled by the Supreme Lord. Every living creature is a son of the Supreme Lord, and He does not tolerate even an "

― A.C. Bhaktivedanta Swami Prabhupāda , Bhagavad-Gita As It Is