_Moby Dick_ is an easy book, as long as we read it as a yarn or an account of whaling interspersed with snatches of poetry. But as soon as we catch the song in it, it grows difficult and immensely important. Narrowed and hardened into words the spiritual theme of _Moby Dick_ is as follows: a battle against evil conducted too long or in the wrong way. The White Whale is evil, and Captain Ahab is warped by constant pursuit until his knight-errantry turns into revenge. These are words--a symbol for the book if we want one--but they do not carry us much further than the acceptance of the book as a yarn--perhaps they carry us backwards, for they may mislead us into harmonizing the incidents, and so losing their roughness and richness. The idea of a contest we may retain: all action is a battle, the only happiness is peace. But contest between what? We get false if we say that it is between good and evil or between two unreconciled evils. The essential in _Moby Dick_, its prophetic song, flows athwart the action and the surface morality like an undercurrent. It lies outside words. Even at the end, when the ship has gone down with the bird of heaven pinned to its mast, and the empty coffin, bouncing up from the vortex, has carried Ishmael back to the world--even then we cannot catch the words of the song. There has been stress, with intervals: but no explicable solution, certainly no reaching back into universal pity and love; no "Gentlemen, I've had a good dream." The extraordinary nature of the book appears in two of its early incidents--the sermon about Jonah and the friendship with Queequeg. The sermon has nothing to do with Christianity. It asks for endurance or loyalty without hope of reward. The preacher "kneeling in the pulpit's bows, folded his large brown hands across his chest, uplifted his closed eyes, and offered a prayer so deeply devout that he seemed kneeling and praying at the bottom of the sea." Then he works up and up and concludes on a note of joy that is far more terrifying than a menace. Delight is to him whose strong arms yet support him when the ship of this base treacherous world has gone down beneath him. Delight is to him who gives no quarter in the truth, and kills, burns and destroys all sin though he pluck it out from under the robes of Senators and Judges. Delight--top-gallant delight is to him, who acknowledges no law or lord, but the Lord his God, and is only a patriot to heaven. Delight is to him, whom all the waves of the billows of the seas of the boisterous mob can never shake from this sure Keel of the Ages. And eternal delight and deliciousness will be his, who coming to lay him down, can say with his final breath--O Father!--chiefly known to me by thy rod--mortal or immortal, here I die. I have striven to be Thine, more than to be this world's or mine own. Yet this is nothing: I leave eternity to Thee: for what is man that he should live out the lifetime of his God?