Our success was mainly due to the fact that we stimulated the nerves of animals that easily stood on their own feet and were not subjected to any painful stimulus either during or immediately before stimulation of their nerves.

While you are experimenting, do not remain content with the surface of things.

It is not accidental that all phenomena of human life are dominated by the search for daily bread - the oldest link connecting all living things, man included, with the surrounding nature.

As was to be expected, the discovery of the nervous apparatus of the salivary glands immediately impelled physiologists to seek a similar apparatus in other glands lying deeper in the digestive canal.

Finally, as the digestive canal is a complex system, a series of separate chemical laboratories, I cut the connections between them in order to investigate the course of phenomena in each particular laboratory; thus I resolved the digestive canal into several separate parts.

It has long been known for sure that the sight of tasty food makes a hungry man's mouth water; also lack of appetite has always been regarded as an undesirable phenomenon, from which one might conclude that appetite is essentially linked with the process of digestion.

The gastric laboratory uses its protein ferment under an acid reaction.

Perfect as the wing of a bird may be, it will never enable the bird to fly if unsupported by the air. Facts are the air of science. Without them a man of science can never rise.

Physiology has, at last, gained control over the nerves which stimulate the gastric glands and the pancreas.

Our success was mainly due to the fact that we stimulated the nerves of animals that easily stood on their own feet and were not subjected to any painful stimulus either during or immediately before stimulation of their nerves.

Don't become a mere recorder of facts, but try to penetrate the mystery of their origin.

Our experiments not only proved the existence of a nervous apparatus in the above-mentioned glands, but also disclosed some facts clearly showing the participation of these nerves in normal activity.

Thanks to our present surgical methods in physiology we can demonstrate at any time almost all phenomena of digestion without the loss of even a single drop of blood, without a single scream from the animal undergoing the experiment.

The digestive canal represents a tube passing through the entire organism and communicating with the external world, i.e. as it were the external surface of the body, but turned inwards and thus hidden in the organism.

The physiologist who succeeds in penetrating deeper and deeper into the digestive canal becomes convinced that it consists of a number of chemical laboratories equipped with various mechanical devices.

From the described experiment it is clear that the mere act of eating, the food even not reaching the stomach, determines the stimulation of the gastric glands.

In the case of the stomach, however, the nerves of the glandular cells were always severed when constructing an artificially isolated pouch and this, naturally, affected the normal work of the stomach.

Edible substances evoke the secretion of thick, concentrated saliva. Why? The answer, obviously, is that this enables the mass of food to pass smoothly through the tube leading from the mouth into the stomach.

Only by observing this condition would the results of our work be regarded as fully conclusive and as having elucidated the normal course of the phenomena.

Appetite, craving for food, is a constant and powerful stimulator of the gastric glands.

It is clear to all that the animal organism is a highly complex system consisting of an almost infinite series of parts connected both with one another and, as a total complex, with the surrounding world, with which it is in a state of equilibrium.

It goes without saying that the desire to accomplish the task with more confidence, to avoid wasting time and labour, and to spare our experimental animals as much as possible, made us strictly observe all the precautions taken by surgeons in respect to their patients.

But man has still another powerful resource: natural science with its strictly objective methods.

As we have seen bread and especially dry bread evokes secretion of considerably larger quantities of saliva than meat.

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.