A person without a sense of humor is like a wagon without springs. It's jolted by every pebble on the road.
Sense of humor is important in life, not just in clothing. How boring to live a life in beige.
The sense of humor has other things to do than to make itself conspicuous in the act of laughter.
HUMOR, CONSPICUOUS IN THE ACT OF LAUGHTER
It's good to be able to laugh at yourself and the problems you face in life. Sense of humor can save you.
When you say a friend has a sense of humor do you mean that he makes you laugh, or that he can make you laugh?
There is no defense against adverse fortune which is so effectual as an habitual sense of humor.
HUMOR, DEFENSE AGAINST ADVERSE FORTUNE