It has been shown how every external activity is directed by an inner motion and how, at the source of it, there is a principal cause. It must be understood that every wave of life which is set in motion by the principal cause, works toward a purpose. With its every motion the purpose becomes more definite, and at its every stage of evolution it adjusts itself, making a perfect harmony - although in a limited space this same activity may appear inharmonious. Therefore good and evil, right and wrong, when viewed by the keen sight, correspond with a certain purpose, and thus prove harmonious from the standpoint of the perfect Whole.