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.
Ivan PavlovWhen the dog is repeatedly teased with the sight of objects inducing salivary secretion from a distance, the reaction of the salivary glands grows weaker and weaker and finally drops to zero.
Ivan PavlovAs we have seen, bread, and especially dry bread, evokes secretion of considerably larger quantities of saliva than meat.
Ivan Pavlov