How to Kill a Dragon: Aspects of Indo-European Poetics
A foundational monograph by Calvert Watkins (1933–2013), longtime professor of linguistics and classics at Harvard University and one of the architects of modern Indo-European studies. The book applies the comparative method not to single cognate words but to entire poetic formulas — syntactic units, metric patterns, and narrative structures — that recur across daughter languages from Old Hittite to medieval Irish. The central thesis is that a specific formula for describing the slaying of a serpent/dragon ("hero kills serpent" in its morphological variants) can be reconstructed as a PIE inheritance carried in oral poetry, not merely a convergent motif. The book received the 1998 Charles J. Goodwin Award of Merit from the American Philological Association. For this vault it is the primary source grounding any claim about descent-type transmission of the dragon-slaying formula, and it models what rigorous reconstruction looks like at the phrasal (not just lexical) level.
Watkins identifies a recurrent morphosyntactic formula across Hittite, Vedic Sanskrit, Old Iranian (Avesta), Greek epic, Celtic, and Germanic sources: a construction meaning "[divine hero] slays [serpent/adversary]" in which both the lexical choices and the grammatical structure are cognate — not just similar. He terms this the PIE "dragon-slayer formula."
"The formula is the vehicle for a central theme… The theme is not merely narrative but constitutes a verbal icon of society's values: the ordered cosmos maintained against chaos." The serpent is not merely a monster but a cosmological antagonist — the embodiment of disorder (\ógwhis, PIE word for serpent, itself a cognate across Greek ophis, Latin anguis, Sanskrit áhi, Avestan aži*).
On the limits of the method: Watkins is careful to distinguish shared formula (structural + lexical identity across branches) from shared motif (structural similarity without lexical identity). The former implies descent; the latter is compatible with convergence or contact. He uses this distinction to argue that the dragon-slayer formula is descent, not convergence.
The oral-formulaic nature of the attested poetry (Vedic, Homeric, Old Irish) is itself evidence for the depth of the tradition: "Oral poetry is the most conservative medium. Formulas persist long after their syntactic environment has changed."
Watkins is a consensus master of the field; the Goodwin Award reflects peer recognition. The approach is philologically rigorous: formula identity is demonstrated with morphological detail, not asserted by loose thematic similarity. Caution: (1) The book's thesis has been influential enough to shape the subfield, which risks confirmation bias in subsequent work. (2) Some Indologists argue that Vedic dragon-slaying (Indra vs. Vrtra) may incorporate pre-PIE substrate elements, complicating the pure-descent narrative. (3) The Anatolian branch (Hittite Illuyanka myth) is the earliest attested dragon-slaying in the family but shows structural differences that Watkins acknowledges; this weakens but does not refute the reconstruction.
proto-indo-european-religion
pie-dragon-slaying-formula (claim note not yet written)