As fascinating as I find the scholarship on persuasion and consumer behavior, I’ve learned far more about psychology from novelists than from social scientists.

The great American writer Henry James stands out among these timeless mentors, and a quote from him sums up much of my personal theory of communication:

“Three things in human life are important. The first is to be kind. The second is to be kind. And the third is to be kind.”

In this statement, the simplicity of the language speaks vo…