There is a strange kind of human being in whom there is an eternal struggle between body and soul, animal and god, for dominance. In all great men this mixture is striking, and in none more so than in Wolfgang Amadeus Mozart.

People who have no hold over their process of thinking are likely to be ruined by liberty of thought. If thought is immature, liberty of thought becomes a method of converting men into animals.

He who is cruel to animals becomes hard also in his dealings with men. We can judge the heart of a man by his treatment of animals.

Man is a military animal, glories in gunpowder, and loves parade.

Scientists should not do animal testing if there is any alternative, but subject to that, I would support it on grounds of the medical benefits.

When I was a young girl, I was so crazy about animals that I wanted to do something associated with them, and I thought of being a vet. But then again, I figured I had to go to medical school, and science wasn't a good subject for me, so I dropped the idea pretty soon and thought maybe I could be a vet's assistant.

I want medical experiments on animals stopped. They don't do anything, and they don't work.

I love to go to the zoo. But not on Sunday. I don't like to see the people making fun of the animals, when it should be the other way around.

He who does not love his own language is worse than an animal and smelly fish.

Farming with live animals is a 7 day a week, legal form of slavery.

When man learns to understand and control his own behavior as well as he is learning to understand and control the behavior of crop plants and domestic animals, he may be justified in believing that he has become civilized.

No part of the world can be truly understood without a knowledge of its garment of vegetation, for this determines not only the nature of the animal inhabitants but also the occupations of the majority of human beings.

When we see animals doing remarkable things, how do we know if we're simply seeing tricks or signs of real intelligence? Are talented animals just obeying commands, or do they have some kind of deeper understanding? One of the biggest challenges for animal researchers is to come up with tests that can distinguish between the two.

I think that animals aren't less intelligent than humans, they're just of a different intelligence. We have five million smell-sensitive cells in our nose, they have two hundred and fifty million - they can smell emotion. They can smell different types of emotion, they just have another type of intelligence.

I think there's a supreme power behind the whole thing, an intelligence. Look at all of the instincts of nature, both animals and plants, the very ingenious ways they survive. If you cut yourself, you don't have to think about it.

Human folk are as a matter of fact eager to find intelligence in animals.

From the lowest animals of which we can affirm intelligence up to man this type of intellect is found.

What happens if you stick at something long enough, and study it for so long, you have a different kind of intelligence. It's not an intellectual thing. It's almost like an animal intelligence. I call it our form of instinct, almost how a lion knows exactly where its prey is.

I do not want to go into its physical reasons: the construction of the human body is different from that of carnivorous animals. But man's intelligence is such that it can be utilised to defend any-thing he does, whether right or wrong.

The intelligence of the lower forms of animal life, like a great deal of human intelligence, does not involve a self.

I think that intelligence is such a narrow branch of the tree of life - this branch of primates we call humans. No other animal, by our definition, can be considered intelligent. So intelligence can't be all that important for survival, because there are so many animals that don't have what we call intelligence, and they're surviving just fine.

If an animal does something, we call it instinct; if we do the same thing for the same reason, we call it intelligence.

It feels like animation has a little more independence than traditional sitcoms ever did.

Independence is all very well, but we animals never allow our friends to make fools of themselves beyond a certain limit; and that limit you've reached.