He wrote Traité de l’homme et de la formation du foetus Comment on man and fetal formation, 1664, a text on physiology. Manipulating in psychology, he asserted that in the end, emotions are based on physiology and that he argues that the physical display of emotions controls them by themselves. Descartes’ main work on psychology includes Traité de passions de l’âme Comment on the passions of the soul, 1650; Grinch christmas 3d illusion doormat. In the development of philosophy, there was Meditations de prima philosophia Philosophical Thought, 1641; Principia philosophiae Philosophical Principle, 1664 is also very important. Descartes’ influence on philosophy was immense. People often call him the father of modern philosophy.