C. G. Jung in His own Words

We have now discovered that it was intellectually unjustified presumption on our forefathers' part to assume that man has a soul; that that soul has substance, is of divine nature and therefore immortal; that there is a power inherent in it which builds up the body, supports its life, heals its ills and enables the soul to live independently of the body; that there are incorporeal spirits with which the soul associates; and that beyond our empirical present there is a spiritual world from which the soul receives knowledge of spiritual things whose origins cannot be discovered in this visible world.  But people who are not above the general level of consciousness have not yet discovered that it is just as presumptuous and fantastic for us to assume that matter produces spirit; that apes give rise to human beings; that from the harmonious interplay of the drives of hunger, love, and power Kant's Critique of Pure Reason should have arisen; that the brain-cells manufacture thoughts, and that all this could not possibly be other than it is.