Some people blow their top, but all people blow their bottom.
The quizzical expression of the monkey at the zoo comes from his wondering whether he is his brother's keeper, or his keeper's brother.
Ego: The only thing that can keep growing without nourishment.
All work and no play makes Jack a dull boy - and Jill a wealthy widow.
After wisdom comes wit.
The lecturer who is full of his subject is usually very slow in emptying himself.