"I am thankful for laughter,except when milk come out of my nose" 

-Woody Allen-

"A man isn't poor if he can still laugh" 

-Raymond Hitchcock-

"With the fearful strain that is on me night and day, if i didn't laugh i should die" 

-Abraham Lincoln-

"Laughter is the corrective force which prevent us from becoming cranks"  

-Henri Bergson-