The most moving speech I ever saw Jimmy Carter give was at a church one Sunday morning back in the mid-80's. He spoke about the concept of agape. It wasn't so much what he said; it was the fact that he actually convinced me that he meant what he was saying. I found that to be quite refreshing, coming from a politician.
Can you imagine for one silly second hearing Bill Clinton say what he actually means? Well, you couldn't show it on the nightly news anyway, so it wouldn't matter.
Jimmy Carter had me spellbound discussing this concept of love as not meaning "love for your family" or "love for your fellow citizen," but love for the person you hate the most.