Browning is a forerunner of modernism. His poetry can offer difficulty because of the labyrinthian syntax in pursuit of meanings which for their originator, at least, were clear. Browning is a "Christian" poet but no orthodox one. He believes in a dynamic incarnation repeating itself throughout creation and in every moment of existence. Grace and Redemption, however, are relatively foreign if not alien concepts to him - one of the reasons it's quite accurate to think of him as the most "optimistic" poet, if not author, in all English literature.