A man can live and be healthy without killing animals for food; therefore, if he eats meat, he participates in taking animal life merely for the sake of his appetite. And to act so is immoral.

This is dreadful! Not the suffering and death of the animals, but that man suppresses in himself, unnecessarily, the highest spiritual capacity—that of sympathy and pity toward living creatures like himself—and by violating his own feelings becomes cruel. And how deeply seated in the human heart is the injunction not to take life!

vegetarianism is the taproot of humanitarianism.

Eating meat is a leftover of the greatest brutality [killing]; the transition to vegetarianism is the first and most natural consequence of enlightenment.

Vegetarianism serves as the criterion by which we know that the pursuit of moral perfection on the part of humanity is genuine and sincere.