"On the spiritual theory, man consists essentially of a spiritual nature or mind intimately associated with a spiritual body or soul, both of which are developed in and by means of a material organism"

In this quote, Alfred Russel Wallace is discussing the concept of the human being from a spiritual perspective. He suggests that at the core of our being, we are made up of a spiritual nature or mind. This spiritual element is carefully connected to a spiritual body or soul. These two parts work together and are established through making use of a physical body. To put it simply, our physiques serve as a vessel for our spiritual nature and soul to grow and evolve. This viewpoint highlights the importance of both the physical and spiritual elements of our existence and how they are linked.