Ivan Pavlov Quotes
Perfect as the wing of a bird may be, it will never enable the bird to fly if unsupported by the air...
Show MoreFrom the described experiment it is clear that the mere act of eating, the food even not reaching th...
Show MoreIt has long been known for sure that the sight of tasty food makes a hungry man's mouth water; also ...
Show MoreBut man has still another powerful resource: natural science with its strictly objective methods.
It goes without saying that the desire to accomplish the task with more confidence, to avoid wasting...
Show MoreAppetite, craving for food, is a constant and powerful stimulator of the gastric glands.
