"The chief purpose of reincarnation is education. To this end, we are born again and again on earth, not because of any external pressure, but because we, as souls, desire to grow. The driving power at the back of reincarnation, which brings us to earth again, is the thirst for experience, the desire for knowledge, the yearning to mingle in the throb and rush of physical existence. "
Irving S. Cooper, Reincarnation: A Hope of the World