"What gives value to travel is fear. It is a fact, at a certain moment, when we are far from our own country we are seized by a vague fear, and an instinctive desire to go back to the protection of old habits. This is the most obvious benefit of travel. At that moment we are feverish but also porous, so that the slightest touch makes us quiver to the depths of our being. We come across a cascade...