"It's about loving your neighbor, and recognizing that none of us — not me, and not you — is in the position to cast the first stone," Mr. Westen writes.
"The political brain is an emotional brain. It is not a dispassionate calculating machine, objectively searching for the right facts, figures, and policies to make a reasoned decision," he writes. "We can't change the structure of the political brain, which reflects millions of years of evolution. But we can change the way we appeal to it."