Lecture IV

First, human beings have their physical organism. The most striking phenomenon in the physical organism is that in the first period of life they have what we call “first teeth,” which last until the time we call “change of teeth.” The teeth are only the most obvious thing that is changed at this time. For the fact is that human beings only keep the physical substance they received at birth until the change of teeth. They are constantly stripping that physical material from their form.