The only real measure of an advertisement is whether it sells

Ogilvy repeatedly insists that advertising is not an art form to be judged by peer admiration, awards, or cleverness, but a commercial tool whose sole legitimate metric is whether it moves the product it's promoting. He's openly scornful of agencies and creatives who prioritize winning industry awards over generating sales, arguing this misalignment wastes client money on work that entertains other advertisers rather than persuading customers.

This standard, he argues, should discipline every creative decision: if a clever headline or striking visual doesn't demonstrably help sell, it doesn't belong in the ad no matter how much the creative team likes it. He backs this with his own agency's practice of testing headlines, layouts, and copy against actual sales and response data rather than internal opinion.

Takeaway: judge advertising by sales results, not by how impressed your peers or colleagues are with the creative work.