He was good at what he did.
I read an interesting book recently, "Surely you're joking, Mr. Feynman". A really funny read, not really an autobiography, just a collection of stories from his life.
He tells how when his wife was ill and about to die when he was in Los Alamos, he had to borrow a car to drive to the hospital...
The car he borrowed belonged to a guy named Fuchs...who you may recognize as the biggest spy there. Small world, I guess.
Claus Fuchs. Ugh. The British were even more penetrated than we were.