What's the connection between clarity, creativity, and influence? Advertising legend William Bernbach sums it up:

"The truth isn't the truth until people believe you, and they can't believe you if they don't know what you're saying, and they can't know what you're saying if they don't listen to you, and they won't listen to you if you're not interesting, and you won't be interesting unless you say things imaginatively, originally, freshly."

From Hey, Whipple, squeeze this: A Guide to Creating Great Ads