Merleau-Ponty, in his pro-Soviet phase, asked him what he would do if he had to choose between two events, one of which would kill 300 people and the other 3,000. What difference was there, philosophically speaking? Sartre replied that there was a mathematical difference, of course, but not a philosophical one, for each individual is an infinite universe in his or her own eyes, and one cannot compare one infinity with another.