If it doesn't sell, it isn't creative.
The advertisers who believe in the selling power of jingles have never had to sell anything.
Leaders grasp nettles.
Good copy can't be written with tongue in cheek, written just for a living. You've got to believe in the product.
Remove advertising, disable a person or firm from proclaiming its wares and their merits, and the whole of society and of the economy is transformed. The enemies of advertising are the enemies of freedom.