The more I learn about people, the more I like my dog. — Mark Twain
When the history of the Animal Liberation movement comes to be written, the era that began with Bentham will be known as the era of excuses. — Peter Singer
Man in his arrogance thinks himself a great work, worthy of the interposition of a deity. More humble and, I believe, more true, to consider him created from animals. — Charles Darwin
The question is not, Can they reason? nor Can they talk? but, Can they suffer? — Jeremy Bentham
So far as animals are concerned, we have no direct duties. Animals are not self-conscious, and are there merely as a means to an end. That end is man. —Immanuel Kant
Bound by the laws of humanity to give gentle usage to these creatures. — David Hume
Presumption is our natural and original disease… ‘Tis by the same vanity of imagination that [man] equals himself to God, attributes to himself divine qualities, and withdraws and separates himself from the crowd of other creatures. — Plutarch
The wolf also shall dwell with the lamb, and the leopard shall lie down with the kid; and the calf and the young lion and the fatling together; and a little child shall lead them. — Isaiah 11:6