The creative process requires more than reason. Most original thinking isn't even verbal. It requires 'a groping experimentation with ideas, governed by intuitive hunches and inspired by the unconscious.' The majority of business men are incapable of original thinking because they are unable to escape from the tyranny of reason. Their imaginations are blocked.
David OgilvyMost agencies run scared, most of the time. . . .Frightened people are powerless to produce good advertising. . . . If I were aclient, I would do everything in my power to emancipate my agencies from fear, even to the extent of giving them long-term contracts.
David Ogilvy