Gringrich has many flaws, as we all do, but he's owned up to them, and as you'll see in the vid below he grieves and apologizes for what he's done. Heaven knows what pain we all caused some others, and what any of us has suffered because of others or what we've brought on ourselves.
This speaks to humility, that one can't assume so powerful a position without divine guidance. The body of this man's work for good; the time, energy and passion needs to be looked at, and we shouldn't fall into the trap the opposition wants us to, which is to focus only on his failings. God help me if I were viewed by only my failings.