We learn from this that both opinions are right. We are evolving, and yet at the same time going backward. In certain things we are evolving, and in certain things we are going backward; and this brings us to the philosophical conception that it is not only the world which is round, but that everything is round; that everything moves in circles. For instance the early dawn is not very different from the late evening, age is not very different from infancy, when we realize how innocence develops as one grows old and one arrives at a stage where one shows the same expression of the angelic spheres which one had as an infant. It is just like the octave: seven notes and then the key-note comes again.