Purity of life is the central theme of all religions which have been taught to humanity in all ages. Purity of life has been their central idea, and they only differ in the way of looking at it. It seems that purity of life has not only sprung from religion, but is the outcome of the nature of life; one sees it in all living creatures in some form or other, so to speak working out its destiny. One sees this tendency in the animals, who look for a clean place to sit, and among the birds, who go to the lake or river to bathe and clean their feathers. In humanity one sees the same tendency even more pronounced. A man who has not risen above the material life, shows this faculty in physical cleanliness, but behind it there is something else hidden, and that which is hidden behind is the secret of the whole creation, or the purpose for which the whole world was made.