"On the average, five times as many people read the headline as read the body copy. When you have written your headline, you have spent eighty cents out of your dollar"

This quote by David Ogilvy is highlighting the importance of a headline when it pertains to advertising. He is saying that usually, 5 times as many people will read the headline of an ad than the body copy. This means that the headline is the most vital part of the advertisement, as it is the very first thing that people will see and check out. Ogilvy is stating that when you have actually written your heading, you have actually currently invested 80% of your effort in developing the ad. This is because the heading is the most vital part of the ad and will figure out whether people will check out the body copy or not. For that reason, it is essential to spend time and effort in developing a memorable and efficient headline.