Common sense and a sense of humor are the same thing, moving at different speeds. A sense of humor is just common sense, dancing.
(Clive James)

Learn to laugh at your troubles and you'll never run out of things to laugh at.
(Lyn Karol)

Now is the time for all good men to come to.
(Walt Kelly)

Washington is a city of Southern efficiency and Northern charm.
(John F. Kennedy)

With the fearful strain that is on me night and day, if I did not laugh I should die.
(Abraham Lincoln)

The ability to quote is a serviceable substitute for wit.
(W. Somerset Maugham)

He who laughs, lasts.
(Mary Pettibone Poole)

Blessed is he who has learned to laugh at himself, for he shall never cease to be entertained.
(John Powell)

We are all here for a spell; get all the good laughs you can.
(Will Rogers)

He who laughs last thinks slowest.
(Seen on a bumper sticker)

When a person can no longer laugh at himself, it is time for others to laugh at him.
(Thomas Szasz, The Second Sin, 1973)