ABSTRACT
This morning, in the Avenue General Leclerc in Paris, I saw what popular opinion calls a madman, behaving in a way that psychiatrists call psychotic. He was making sweeping gestures with his arms and leaping from one side of the pavement to the other. He talked and talked and scared the passers-by with great gyrations, apparently enjoying this immensely, since he burst out laughing each time he managed to induce a fearful response.
