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

Men are apt to be much more influenced by words than by the actual facts of the surrounding reality

Learn the ABC of science before you try to ascend to its summit.

I am convinced that an important stage of human thought will have been reached when the physiological and the psychological, the objective and the subjective, are actually united, when the tormenting conflicts or contradictions between my consciousness and my body will have been factually resolved or discarded.

Learn, compare, collect the facts!

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

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.