“A certain degree of physical harmony and comfort is necessary, but above a certain level it becomes a hindrance instead of help. Therefore the ideal of creating an unlimited number of wants and satisfying them seems to be a delusion and a snare. The satisfaction of one's physical needs, even the intellectual needs of one's narrow self, must meet at a certain point a dead stop, before it degenerates into physical and intellectual voluptuousness. A man must arrange his physical and cultural circumstances so that they do not hinder him in his service of humanity, on which all his energies should be concentrated.”