“Of all the animals, man is the only one that is cruel. He is the only one that inflicts pain for the pleasure of doing it.”

“Man, of all the animals, is probably the only one to regard himself as a great delicacy.”

“It is almost a definition of a gentleman to say he is one who never inflicts pain.”

“Pleasure is never as pleasant as we expected it to be and pain is always more painful. The pain in the world always outweighs the pleasure. If you don't believe it, compare the respective feelings of two animals, one of which is eating the other.”

“God has given to Man an absolute right to take the lives of other animals, for any reasonable cause, such as the supply of food; but He has not given to Man the right to inflict pain, unless where necessary.”

“There is no fundamental difference between man and animals in their ability to feel pleasure and pain, happiness, and misery.”

“There is only one pleasure—that of being alive. All the rest is misery.”

“All creatures kill—there seems to be no exception; but of the whole list, man is the only one that kills for fun; he is the only one that kills in malice, the only one that kills for revenge.”

“We do not need to eat animals, wear animals, or use animals for entertainment purposes, and our only defense of these uses is our pleasure, amusement, and convenience.”

“Why do we have such a finite capacity for pleasure but an infinite one for pain?”