Religion, Repentance, and a Saving Self-Awareness (Luke 18:9-14)

As Luke 18 continues, Jesus resets the rhetorical stage with a fresh batch of characters - this time a Pharisee and a Tax Collector who both find themselves at prayer. And yet, if the two characters occupations couldn't be more different, the same is true about their approach to God...yet Jesus tells us only of them went home "justified." Which one? Why? And what does that reveal about ourselves? About God? And about the true nature of the Gospel?