Buster Keaton was once perfectly described by Orson Welles:
“Keaton was beyond all praise, a very great artist, and one of the most beautiful men I ever saw on the screen. He was also a superb director. In the last analysis, nobody came near him
(…) I wish I’d known him better than I did.s A tremendously nice person, you know, but also a man of secrets. I can’t even imagine what they were (…)”
( from an interview with Peter Bogdanovich)
His humour is indeed strange: the never smiling face, the incessant, permanently unsuccessful fight against destiny, all this is light years away from something as pedantic and obvious as German humour ( if such a thing exists at all ), whose most prominent comedian Loriot never ventured outside slapstick, cannot hold a candle to Buster and subsequently never made it outside his own country.
Here is an excellent introduction into this genius of a director.
And for those interested in one of his many shorts, here it is: