Beowulf: The Monsters and the Critics give it a powerful effect. He rebuts suggestions that the poem is an epic or exciting narrative, likening it instead to a strong masonry structure built of blocks that fit together. He points out that the poem's theme is a serious one, mortality, and that the poem is in two parts: the first on Beowulf as a young man, defeating Grendel and his mother; the second on Beowulf in old age, going to his death fighting the dragon. The work has been praised by critics including the poet and "Beowulf" translator Seamus Heaney. Michael D. C. Drout called it the
The dragon (Beowulf) referred to in language which is meant to recall the powers of darkness which Christian men felt themselves to be encompassed. They are 'inmates of hell', 'adversaries of God', 'offspring of Cain', 'enemies of mankind'...And so Beowulf, for all that he moves in the world of the primitive Heroic Age of the Germans, nevertheless is almost a Christian knight". Peter Gainsford noted in the article "The Deaths of Beowulf and Odysseus: Narrative Time and Mythological Tale Types" that "In the twenty-first century "Beowulf" does not lack for commentators to defend the literary merit of the dragon episode". Adrien Bonjour opined