The science of psychology, by many authors, is treated as a merely natural science ; the soul itself, as a distinct existence above the physical, being either denied altogether, or treated problematically. The effort is made to explain all the phenomena of the mind and soul as due to physical causes. Psychology is the science of the soul ;and psychology which treats of the soul as nonexistent is a psychology without a psyche. If soul phenomena are treated as physiological effects, to be explained merely as the result of brain tissue vibration and action, the science is brought down to a description of mere states and conditions of the brain, and it becomes a branch of physiology. Moreover psychology under such conditions is measured by and subjected to physical laws alone. The attempt to treat psychology as a natural science, inevitably leads to this result, so that the soul as a distinct entity is ignored or denied.
In order that man in his development may be led to the final end, which is eternal life, two classes of knowledge must be acquired, namely: knowledges concerning the world and life in the world, and knowledges concerning heaven and heavenly life. These also must be communicated in each age mentioned above, namely: in infancy,childhood and youth and adult age. The knowledges concerning the world form the basis and foundation, but the knowledges concerning heaven are the essence and life which vivify the lower. We will here treat of the knowledges concerning heaven and heavenly life and show their importance and value in a true education.
1. A philosophical argument concerning the first principles of natural things.