There is no such thing as a good or bad ad in isolation. What is good at one moment is bad at another. Research can trap you into the past.

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.

For the Flower to blossom, you need the right soil as well as the right seed. The same is true to cultivate good thinking.

The world has progressed to the point where it's most powerful force is public opinion. And I believe that in this world it is not the great book or epic play, as once was the case, that will shape that opinion, but those who understand mass media and the techniques of mass persuasion...We must not just believe in what we sell. We must sell what we believe in. And we must pour a vast energy into those causes.

It's not just what you say that stirs people. It's the way that you say it.

The heart of creativity is discipline.

Word of mouth is the best medium of all.