form, it cannot be destroyed in any natural process. The full argument for the immortality of the soul and Aquinas' elaboration of Aristotelian theory is found in Question 75 of the First Part of the Summa Theologica. Aquinas affirmed in the doctrine of the divine effusion of the soul, the particular judgement of the soul after the separation from a dead body, and the final Resurrection of the flesh. He recalled two canons of the 4th-century De Ecclesiasticis Dogmatibus for which "the rational soul is not engendered by coition" (canon XIV) and "is one and the same soul in man, that both gives life to the body by being united to it, and orders itself by its own reasoning." Moreover, he believed in a unique and tripartite soul, within which are distinctively present a nutritive, a sensitive and intellectual soul. The latter is created by God and is taken solely by human beings, includes the other two types of soul and makes the sensitive soul incorruptible. Immanuel Kant In his discussions of rational psychology, Immanuel Kant (1724–1804) identified the soul as the "I" in the strictest sense, and argued that the existence of inner experience can neither be proved nor disproved. It is from the "I", or soul, that Kant proposes transcendental rationalization, but cautions that such rationalization can only determine the limits of knowledge if it is to remain practical. Philosophy of mind Gilbert Ryle's ghost in the machine argument, which is a rejection of Descartes's mind–body dualism, can provide a contemporary understanding of the soul/mind, and the problem concerning its connection to the brain/body. Psychology Soul belief prominently figues in Otto Rank's work recovering the importance of immortality in the psychology of primitive, classical and modern interest in life and death. Rank's work directly opposed the "scientific" psychology that concedes the possibility of the soul's existence and postulates it as an object of research without really admitting that it exists. "Just as religion represents a psychological commentary on the social evolution of man, various psychologies represent our current attitudes toward spiritual belief. In the animistic era, psychologizing was a creating of the soul; in the religious era, it was a representing of the soul to one's self; in our era of natural science it is a knowing of the individual soul." Rank's "Seelenglaube" translates to "Soul Belief". Rank's work had a significant influence on Ernest Becker's understanding of