People expect me to be dark and gloomy, then write that I'm a jolly chap, and after all, that is what I am. I think it's a case of an absolute romantic naivety that there should be a parallel between the work and the artist.
“I enjoy popularisation and I think I'm reasonably good at it. I also think it's a duty. It's just so pedagogically stupid to forget how difficult one found these ideas oneself to begin with.”