Other teachings of Spiritualism concern the facts of communication between Earth and the Eteric Planes, and Mediumship. Spiritualism teaches that, under certain conditions, there can be interchange of thought between souls of Earth and those of Etheric Planes. This communication is usually carried on by means of sensitives called mediums whose nervous system is sufficiently refined and harmonized with souls of similar conditions of the Etheric Planes, that individuals may receive proof of the continuation of life after so-called death. Following this, teachers from the Etheric Planes, speaking through mediums, whose powers they may use, bring to us many facts concerning the continued life. Furthermore, they tell us that earth life is a preparatory school for a happy entrance into the continued life.
Evolution is one of the universal laws.
Humanity and all of manifested life are the product of evolution, not of individual creation. All creation contains intelligence, the difference being in the degree of expression. The planets and stars scattered throughout the cosmos are not the result of creation, but of evolution carried out through more eons of time than mortal mind can conceive. The planet Earth is now and ever will be, as long as it continues to exist, undergoing the process of evolution. Not being understood, these demonstrations caused fears and superstitions in the minds of people and from these arose the God-Idea.