The lecturer who is full of his subject is usually very slow in emptying himself.
There would be no population explosion if people who are trying to keep the wolf from the door wouldn't let the stork fly in through the window.
If you can't bear to have your face stepped on, don't try to climb the ladder of success.
A special skill, like speaking several languages, or keeping your mouth shut in one.
Some people blow their top, but all people blow their bottom.
[Statistics] Fiction in its most uninteresting form.