[anonymouskimmer]

Passion is fine and great in all endeavors. Not being able to acknowledge when you are wrong in small or large is the problem. And it's a problem for both passionate and dispassionate people.

One of the earlier researchers on psychopaths was Hervey M. Cleckley. In his book on the topic The Mask of Sanity one of his vignettes of, I believe, "incomplete manifestation of psychopathology" was of a psychologist who gave public lectures on psychopaths, without apparently recognizing that he was almost one of them.

To sum up the parallel, there are two kinds of people who tend to talk the most about any social or personal ill: those who are worried about the ill, and those who are distracting from the fact that they themselves embody it. (Technically this probably overlaps a bit, as ex-alcoholics are often worried about alcoholism, for example.)