Gerasimos Merianos on East Roman Alchemy in Late Antiquity and Beyond, Part II
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In this second part of a deep dive into East Roman alchemy, Gerasimos Merianos explores the intellectual and cultural transformation of alchemy in late antiquity and Byzantium, emphasizing its shift from secretive craft to a mathematized, rational science. Central to the discussion is the work of Christianos, who sought to demystify alchemical texts by applying combinatorial mathematics—using the egg as a symbolic model for the four elements and generating 135 finite alchemical processes. This mathematization not only systematized alchemy but also served to elevate it as a philosophical discipline, distinguishing it from charlatans and amateurs. The episode examines the social and legal boundaries of alchemy, highlighting the rise of the term 'himeftis' (alchemist) in non-alchemical texts and the conflation of alchemy with fraud, as seen in the case of John Isthmäus. In contrast, figures like Michael Pselos present alchemy as a rational, natural art—'the art of change'—free from magic or spellcasting, yet still subject to political scrutiny. Pselos’s indictment of Patriarch Michael I Kerularius reveals how alchemical ambition could be weaponized as a moral and political charge, especially when tied to greed and counterfeiting. The episode concludes with reflections on the Byzantine state’s strict laws against altering coinage and the role of guilds in regulating precious metalwork, underscoring how alchemy was both a technical practice and a contested domain of knowledge, power, and legitimacy.
Christianos used combinatorics to mathematize alchemy, creating a finite system of 135 possible alchemical processes, making the field systematic and rational.
Alchemical knowledge in Byzantium was increasingly tied to philosophical legitimacy, with mathematization serving as a barrier to charlatans and a marker of elite, scholarly practice.
The term 'himeftis' (alchemist) first appears in non-alchemical texts in the context of fraud, showing how alchemy was socially stigmatized despite its intellectual aspirations.
Michael Pselos framed alchemy as a natural, rational process ('the art of change') distinct from magic, yet his later indictment of a patriarch for alchemical greed reveals the political dangers of such pursuits.
Byzantine law strictly punished counterfeiting and unauthorized alteration of precious metals, with guilds like the Silversmiths’ Guild regulated to prevent fraud and maintain imperial control.
…and 2 more takeaways available in PodZeus
Christianos and the Mathematization of Alchemy
“By using what nowadays we call combinatorics in mathematics, in this sense he has limited, he has made finite the alchemical opus. Beyond these 135 ways of doing things, he says there is nothing.”
The Rise of the Alchemist and the Problem of Fraud
“In this narrative the let's say the practical aspect of alchemy, the making of things appearing as golden ones, goes in tandem with the term imposter.”
Michael Pselos: Alchemy as Rational Art and Political Weapon
“He says that he did not know the proportions, neither did he weigh. All he ever managed to accomplish is ironed to come again out as iron.”
Alchemical Legitimacy, Guilds, and State Control
The episode concludes by analyzing Byzantine legal and institutional structures that regulated alchemy through guilds like the Silversmiths’ Guild and strict laws against counterfeiting. These systems reveal how alchemy was both a technical craft and a contested domain of power, legitimacy, and statecraft.
“By using what nowadays we call combinatorics in mathematics, in this sense he has limited, he has made finite the alchemical opus. Beyond these 135 ways of doing things, he says there is nothing.”
“He says that he did not know the proportions, neither did he weigh. All he ever managed to accomplish is ironed to come again out as iron.”
“The implication of alchemy in these charges seems to serve, let's say, a twofold purpose... to underline the patriarchs' obsession for gold and his willingness to resort to every means to acquire it.”
Host
Guest
Gerasimos Merianos
person
Christianos
person
Byzantine Empire
organization
Michael I Kerularius
person
Divine Water
other
John Isthmäus
person
Himeftis
other
Silversmith's Guild
organization
Leyden X papyrus
other
Byzantine Theory of Music
other
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