The soul is what makes every individual person a man: his spiritual life-principle and inmost being. The soul causes the material body to be a living human body. Through his soul, man is a creature who can say “I” and stand before GOd as an irreplaceable individual. [362-365, 382]
Men are bodily and spiritual creatures. A man’s spirit is more than a function of his body and cannot be explained in terms of man’s material composition. Reason tells us that there must be a spiritual principle that is united with the body but not identical to it. We call it the “soul.” Although the soul’s existence cannot be “proved” scientifically, man cannot be understood as a spiritual or intellectual being without accepting this spiritual principle that transcends matter.
