Is There an Immortal Soul?
Pages 19

A savage saw a dead friend in his dreams, and he was sure he had seen his soul; and "soul" and "ghost" came· to mean the same thing in animistic religions. From these primitive ideas developed a system of theories about souls, even up to the highest ideas held by the most enlightened people. In quite early religions the souls were called anima (breath), umbra (shadow), manes (the deified souls of the departed), shades, spirits, etc., and they were supposed to be formed of an exceedingly attenuated substance; some of the ancients thought they were composed of aether which meant atmosphere of the upper realms of the sky, not the chemical substance we now call ether, but more nearly like our ether of space.