Srila Prabhupada :- 'One cannot continue killing animals and | The Bliss Of Krishna Consciousness

Srila Prabhupada :-

"One cannot continue killing animals and at the same time be a religious man. That is the greatest hypocrisy. Jesus Christ said, “Do not kill,” but hypocrites nevertheless maintain thousands of slaughterhouses while posing as Christians. Such hypocrisy is condemned in this verse.

One should be happy to see others happy, and one should be unhappy to see others unhappy. This is the principle to be followed. Unfortunately, at the present moment so-called philanthropists and humanitarians advocate the happiness of humanity at the cost of the lives of poor animals. That is not recommended herein. This verse clearly says that one should be compassionate to all living entities. Regardless of whether human, animal, tree or plant, all living entities are sons of the Supreme Personality of Godhead.

Srimad Bhagavatam 6.10.9 : Srila Prabhupada's PURPORT