This knowledge makes one think, "I am neither my body nor am I my mind; I am the engineer who has these two possessions, these two machineries, to work with to the best advantage of life." Then one begins to ask, "What am I?" For to a certain degree even the mind is a mechanism which is borrowed from the outer sphere, as the body is a mechanism which has been borrowed from the physical plane, which has been gathered together and constructed. Therefore, neither mind nor body is the self. One thinks, "It is myself", only because one cannot see oneself. And so one says of everything one sees, "This is myself." The self becomes acquainted with everything but itself. So that mind which the self has used, has become a kind of cover upon the light which fulfills the purpose of life.