The mint makes it first, it is up to you to make it last.
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.
America believes in education: the average professor earns more money in a year than a professional athlete earns in a whole week.
A dollar saved is a dollar earned but seldom vice versa.
Egocentricity: The vanity that makes you wonder what people are thinking about you when they are really wondering what you are thinking about them.