How the world works

In the book To Sail Beyond the Sunset, Robert Heinlein had two of his characters have the following conversation (which I am paraphrasing):

"Why don't they ..."

"Whenever a question starts out 'Why don't they', the answer is always 'money'."

This is a far more useful observation than the often quoted TANSTAAFL.

We don't need your stinkin' money!