Motile microorganisms of the same species are like solitary eccentrics in their swimming behavior. When they are searching for food, some tumble in one direction for precisely so many seconds before quitting, while others tumble differently and for different, but characteristic, periods of time. If you watch them closely … you can tell them from each other by the way they twirl, as accurately as though they had different names.

Augustine looked inside himself and found God. Descartes looked inside himself and seemed to find himself. However the leading British philosopher of the next century, David Hume, looked inside himself and found sensations and images from the world and the body, but no self. Rejecting this alarming conclusion, leading German philosopher [Immanuel] Kant could not find a self either, but posited it as a logical necessity. He then imbued it with enormous powers, and his followers, the German idealists, said that the invisible Self is so powerful, it creates the universe. (p.154)