A slight, insignificant-looking little man, with a rather good-humored face. High peaked cap, mustache, and small spectacles. I think: If you wanted to trace back all the misery and horror to just one person, it would have to be him. Around him a lot of fellows with weary faces. Very big, heavily dressed men, they swerve along whichever way he turns, like a swarm of flies, changing places among themselves (they don’t stand still for a moment) and moving like a single whole. It makes a fatally alarming impression. They look everywhere without finding anything to focus on.
— David Koker
Feb. 4, 1944
At the Edge of the Abyss: A Concentration Camp Diary, 1943-1944