"In all the world there are only two kinds of people—those who know, and those who do not know; and this knowledge is the thing which matters. What religion a man holds, to what race he belongs–these things are not important; the really important thing is this knowledge–the knowledge of God’s plan for men. For God has a plan, and that plan is evolution. When once a man has seen that and really knows it, he cannot help working for it and making himself one with it, because it is so glorious, so beautiful. So, because he knows, he is on God’s side, standing for good and resisting evil, working for evolution and not for selfishness.