The Sun-Paul must consider only one thing: what is the relation of this or that external reaction of the animal to the phenomena of the external world?More Ivan Pavlov quotes [03/29/2018 05:03:36]

While you are experimenting, do not remain content with the surface of things.More Ivan Pavlov quotes [03/29/2018 05:03:36]

The gastric laboratory uses its protein ferment under an acid reaction.More Ivan Pavlov quotes [03/29/2018 05:03:36]

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.More Ivan Pavlov quotes [03/29/2018 05:03:36]

Learn the ABC of science before you try to ascend to its summit.More Ivan Pavlov quotes [03/29/2018 05:03:36]