Heart of a Pharisee, Head Full of Orthodoxy

John Newton, writing in a letter to a correspondent on controversy (Works of John Newton, 1:270-272):
Whatever it be that makes us trust in ourselves that we are comparatively wise or good, so as to treat those with contempt who do not subscribe to our doctrines, or follow our party, is a proof and fruit of a self-righteous spirit. Self-righteousness can feed upon doctrines, as well as upon works; and a man may have the heart of a Pharisee, while his head is stored with orthodox notions of the unworthiness of the creature and the riches of free grace.
Wow. That hits hard to a person like me.

(HT: JT)