Lecture One

The most important connection we can establish is the one with the human being. We should never miss an opportunity for making this connection. Every situation—be it during a discussion of an animal, of a plant, or of the phenomenon of warmth—every situation presents an opportunity, without losing sight of the subject, without diverting the students from it, to connect with the human being. What, indeed, is there to prevent us, when talking about the phenomenon of warmth, from mentioning fever? What is to prevent us, when talking about elastic balls in physics, from mentioning the phenomenon of vomiting, a process similar to the repulsion in elastic balls? Vice versa, what is there to prevent us, during a lesson on reflexes in the human organism, from mentioning the simple phenomenon of repulsion in elastic balls, and so forth?