Never stop testing, and your advertising will never stop improving. Testing was used in advertising decades ago. The internet has made testing so easy that every online marketer can use it to improve advertising results. Google content experiment is a free tool for you to do split testing.

It's not creative unless it sells.

What you learn is more important than what you earn.

It takes a big idea to attract the attention of consumers and get them to buy your product. Unless your advertising contains a big idea, it will pass like a ship in the night. I doubt if more than one campaign in a hundred contains a big idea.

I did not feel 'evil' when I wrote advertisements for Puerto Rico. They helped attract industry and tourists to a country which had been living on the edge of starvation for 400 years.

Any damn fool can put on a deal, but it takes genius, faith and perseverance to create a brand.

Experience has taught me that advertisers get the best results when they pay their agency a flat fee. It is unrealistic to expect your agency to be impartial when its vested interest lies wholly in the direction of increasing your commissionable advertising.