Never stop testing, and your advertising will never stop improving.

Hard work never killed a man. Men die of boredom, psychological conflict, and disease. They do not die of hard work.

If you can’t be brilliant, at least be memorable

It's not creative unless it sells.

I have noticed that agencies which are full of fun and ferment seem to create the best advertising. If you are not happy in advertising, for goodness sake find a job in which you would be happy. For as far as I know, we pass this way only once

David Ogilvy made his copywriters come up 100 different headlines for every ad they wrote.

Don't count the people that you reach, reach the people who count