The most dangerous thing that ...

The most dangerous thing that can happen to us, I think, is to permit a feeling to develop that any client is a problem. I have always taken the attitude that no account is a 'problem account' but that all accounts have important problems attached to them - that you can waste more time and burn up more nervous energy by fighting a problem than by taking a positive attitude and solving it. It sure gives you a nice, warm glow when you do.
 Leo Burnett

Quotes from the same author

Advertising is the ability to sense, interpret... to put the very heart throbs of a business into type, paper and ink.
 Leo Burnett
I have learned to respect ideas, wherever they come from. Often they come from clients. Account executives often have big creative ideas, regardless of what some writers think.
 Leo Burnett
When you reach for the stars you may not quite get one, but you won't come up with a handful of mud either.
 Leo Burnett
Friction makes sparks and sparks start creative conflagrations.
 Leo Burnett