From Paul Graham's 'Taste for Makers' essay: > humor is related to strength. To have a sense of humor is to be strong: to keep one's sense of humor is to shrug

From Paul Graham's 'Taste for Makers' essay: > humor is related to strength. To have a sense of humor is to be strong: to keep one's sense of humor is to shrug off misfortunes, and to lose one's sense of humor is to be wounded by them.