I never tell one client that I cannot attend his sales convention because I have a previous engagement with another client; successful polygamy depends upon pretending to each spouse that she is the only pebble on your beach.

I had a friend who was the King's surgeon in England. One day I asked him what makes a great surgeon. He replied, "What distinguishes a great surgeon is his knowledge. He knows more than other surgeons. During an operation he finds something which he wasn't expecting, recognizes it and knows what to do about it." It's the same thing with advertising people. The good ones know more. How do you get to know more? By reading books about advertising. By picking the brains of people who know more than you do. From the Magic Lanterns. And from experience.

If it is something important, get a colleague to improve it.

You aren't advertising to a standing army; you are advertising to a moving parade. Three million consumers get married every year. The advertisement which sold a refrigerator to those who got married last year will probably be just as successful with those who'll get married next year. An advertisement is just like a radar sweep, constantly hunting new prospects as they come into the market. Get a good radar and keep it sweeping.

As a private person, I have a passion for landscape, and I have never seen one improved by a billboard. Where every prospect pleases, man is at his vilest when he erects a billboard. When I retire from Madison Avenue, I am going to start a secret society of masked vigilantes who will travel around the world on silent motor bicycles, chopping down posters at the dark of the moon. How many juries will convict us when we are caught in these acts of beneficent citizenship?

The only marketers who know what the hell they're doing are those who have worked in sales

Agencies which frequently work nights and weekends are more stimulating, more successful - and more profitable.