"In former times it was customary for illustrious men, after wearing themselves out in business affairs, to turn to philosophy as to their proper home. How much more fitting is it for people today to direct themselves to the study of the highest wisdom, and how wonderful for them to withdraw into the leisure of solitude and the solitary places of the desert! This enables them to be free for philosophy alone and to wander in the desert with more pleasure than athletes exercising in the gymnasium."