“ He couldn’t work in the mornings at all. As far as that goes, it went that way in Berlin. The Planck lectures — as you know, it was thirty or forty years ago that Planck was in Berlin — were given in the morning from nine to ten. When he got this very, very honorable call to Berlin, he wrote first thing and said, “I’m very sorry, but I can’t keep the lecture hours because I can’t work in the morning.
