It is reason which breeds pride and reflection which fortifies it; reason which turns man inward into himself; reason which separates him from everything which troubles or affects him. It is philosophy which isolates a man. No longer can anything but dangers to society in general disturb the tranquil sleep of the philosopher. A fellow-man may with impunity be murdered under his window, for the philosopher has only to put his hands over his ears and argue a little with himself, from making him identify himself with the victim of the murder
