Wild animals never kill for sport. Man is the only one to whom the torture and death of his fellow creatures is amusing in itself.
The glory of man is that he is a thinking being. It is the nature of man to think and therein he differs from animals
There is no safe standard to tell man from animals.
I am more proud of what distinguishes man from the animals than of what he has in common with them.
What is it that distinguishes man from animals? It is not his upright posture.
Sorrow was made for man, not for beasts; yet if men encourage melancholy too much, they become no better than beasts.
We slander the hyena; man is the fiercest and cruelest animal.
If you pick up a starving dog and make him prosperous he will not bite you. This is the principal difference between a dog and man.
All animals, except man, know that the principal business of life is to enjoy it.
Thus, while the mute creation downward bend Their sight, and to their earthly mother ten, Man looks aloft; and with erected eyes Beholds his own hereditary skies.
Animals can learn, but it is not by learning that they become dogs, cats, or horses. Only man has to learn to become what he is supposed to be.
The wolf never kills for fun, which is probably one of the main differences distinguishing him from man.
It is the simple truth that man does differ from the brutes in kind and not in degree; and the proof of it is here; that it sounds like a truism to say that the most primitive man drew a picture of a monkey and that it sounds like a joke to say that the most intelligent monkey drew a picture of a man. Something of division and disproportion has appeared; and it is unique. Art is the signature of man.
The animals that depend on instinct have an inherent knowledge of the laws of economics and of how to apply them; Man, with his powers of reason, has reduced economics to the level of a farce which is at once funnier and more tragic than Tobacco Road.
Man is an individual. The animals, plants and minerals are divided into species. They are not individualized in the same sense that man is.
