The 8 key words that will ...

The 8 key words that will move practically anyone to your side of the issue: 'If you can't do it, I'll definitely understand.'
 Bob Burg

Quotes from the same author

Influence is the ability to move a person to a desired action.
 Bob Burg
Ultimate influence is the ability to get the results you want from others while helping them feel genuinely good about themselves.
 Bob Burg
Unless you are able to influence the way others think and act, your chances for success are limited.
 Bob Burg
Position yourself as a center of influence, the one who knows the movers and shakers. People will respond to that, and you'll soon become what you project.
 Bob Burg