The main peculiarity which distinguishes man from other animals is the means of his support-the power which he possesses of very greatly increasing these means.

A writer may tell me that he thinks man will ultimately become an ostrich. I cannot properly contradict him.

Each pursues his own theory, little solicitous to correct or improve it by an attention to what is advanced by his opponents.

I think it will be found that experience, the true source and foundation of all knowledge, invariably confirms its truth.

No limits whatever are placed to the productions of the earth; they may increase forever.

The power of population is indefinitely greater than the power in the earth to produce subsistence for man.

The main peculiarity which distinguishes man from other animals is the means of his support-the power which he possesses of very greatly increasing these means.

The friend of the present order of things condemns all political speculations in the gross.

It is an acknowledged truth in philosophy that a just theory will always be confirmed by experiment.

Population, when unchecked, goes on doubling itself every 25 years or increases in a geometrical ratio.

In a state therefore of great equality and virtue, where pure and simple manners prevailed, the increase of the human species would evidently be much greater than any increase that has been hitherto known.

The ordeal of virtue is to resist all temptation to evil.

The constant effort towards population, which is found even in the most vicious societies, increases the number of people before the means of subsistence are increased.

Population, when unchecked, increases in a geometrical ratio.

The rich, by unfair combinations, contribute frequently to prolong a season of distress among the poor.

A great emigration necessarily implies unhappiness of some kind or other in the country that is deserted.

The great and unlooked for discoveries that have taken place of late years have all concurred to lead many men into the opinion that we were touching on a period big with the most important changes.

The histories of mankind are histories only of the higher classes.

The superior power of population cannot be checked without producing misery or vice.

I do not know that any writer has supposed that on this earth man will ultimately be able to live without food.

The most baleful mischiefs may be expected from the unmanly conduct of not daring to face truth because it is unpleasing.

The world's population will multiply more rapidly than the available food supply.

Man has done a lot to make himself dangerous and animals get the worst of all of it. But then, man too is an animal.

Biology will relate every human gene to the genes of other animals and bacteria, to this great chain of being.

When I see professional clowns, mimes, or people who makes ballon animals, I think of their relatives and how disappointed they must be.

Animals often strike us as passionate machines.

My object will be, first, to show by what connections the history of the fossil bones of land animals is linked to the theory of the earth and why they have a particular importance in this respect.

Hence the same instant which killed the animals froze the country where they lived. This event was sudden, instantaneous, without any gradual development.

Towns are suffering from all these things, we should unite until we are all satisfied, man cannot be killing each other as if we were animals, as if we had no culture; that is a lack of culture.

Animals are such agreeable friends - they ask no questions; they pass no criticisms.

The only way to save a rhinoceros is to save the environment in which it lives, because there's a mutual dependency between it and millions of other species of both animals and plants.

I've always been fascinated by the way that children and animals suffer stoically in a way that I don't think adults do.

Ever occur to you why some of us can be this much concerned with animals suffering? Because government is not. Why not? Animals don't vote.

Animals are reliable, many full of love, true in their affections, predictable in their actions, grateful and loyal. Difficult standards for people to live up to.

When we seed millions of acres of land with these plants, what happens to foraging birds, to insects, to microbes, to the other animals, when they come in contact and digest plants that are producing materials ranging from plastics to vaccines to pharmaceutical products?

It's been my dream to have four babies by 30. I look after animals, so I'd have a lot to give my kids.

Yes, I've kissed a lot of guys. I like to kiss, but that's it. I don't go home with anyone. I sleep with my animals, like my baby monkey, Brigitte Bardot.

The desire to take medicine is perhaps the greatest feature which distinguishes man from animals.

The tabloids are like animals, with their own behavioural patterns. There's no point in complaining about them, any more than complaining that lions might eat you.

Early experiences convinced me that animals can and do have quite distinct personalities.

Without civilization, we would not turn into animals, but vegetables.

God sleeps in the minerals, awakens in plants, walks in animals, and thinks in man.

History is a people's memory, and without a memory, man is demoted to the lower animals.

Although I agree that wild horses are a symbol of the American West, I also believe that it is the responsibility of Congress to ensure that these animals are managed, protected, and controlled in an effective manner.

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

The proportion between the velocity with which men or animals move, and the weights they carry, is a matter of considerable importance, particularly in military affairs.

Working on behalf of companion animals is so important. We start to realize how healing they are.

The theoretical understanding of the world, which is the aim of philosophy, is not a matter of great practical importance to animals, or to savages, or even to most civilised men.

I always felt people should live with animals.