Here's a good write-up about some of those stunts. With that falling building where he's framed by the window, Buster Keaton said later that he was out of his mind while some of the film crew hid their eyes so they wouldn't see him crushed.

STUNTS

“In a time of deceit telling the truth is a revolutionary act.”
― George Orwell

It's not over when you lose. It's over when you quit.