[262] but in any case medical men from both the psychological and the bodily side realized that this division makes the description of any sickness impossible. This is the discovery, a rediscovery, of the 20th century. And this rediscovery is a return of man to himself. Here something very interesting (which will astonish you) comes to my mind, namely the fact that Christianity was, especially in its Platonic-Augustinian line of thought, partly responsible for the Cartesian division. Descartes^a belongs to the Augustinian tradition. What does this mean? It means that they followed the Platonic ^bdivision of the world of essences and the world of mathematical bodies and their movements. Platonism is the foundation of modern mathematical science, while Aristotelianism^c is a reaction against it, and Aristotle^d is the father of the gestalt^e thinking, the thinking in terms of gestalt---because Aristotle comes from biology; Plato ^fcomes from Pythagorean^g physics and mathematics. And since Christianity had in itself this dualistic tendency of separating body and soul (as it usually was called), it was very much in favor for what I call man losing himself. Here Christianity and mathematical science went together, both coming from Plato ^hand the Pythagoreans.ⁱ Now this is the view which sometimes should be realized, if you want to understand the history of physics and the history of such a thing as gestalt ^jpsychology in relation to the fundamental forms of thinking as they were developed in Greek thought. But this was a footnote to the history of philosophy which I gave because I hope it ASTONISHED you---usually "Christianity and Plato^k: that belongs together, both are idealist, and nonsense of course"---and so on.