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What Columbus’s Journal prologue says
The prologue, as preserved in Las Casas’s digest of the Journal, describes the Catholic monarchs as sending Columbus to learn about the people and territories he expected to encounter and “the proper method of converting them to our holy faith.” The language makes conversion an explicit element of the mission as Columbus presented it.
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“Your Highnesses, as Catholic Christians, and princes who love and promote the holy Christian faith, and are enemies of the doctrine of Mahomet, and of all idolatry and heresy, determined to send me, Christopher Columbus, to the above-mentioned countries of India, to see the said princes, people, and territories, and to learn their disposition and the proper method of converting them to our holy faith;”
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This wording comes from the Journal prologue in the Fordham transcription. It is evidence of how the expedition was framed in that account, not proof that every participant understood its goals in precisely the same way.
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Conversion appears alongside territorial authority
The prologue also places the expedition in the aftermath of the monarchs’ victory at Granada and describes the privileges Columbus received. These included the titles of High Admiral, perpetual Viceroy, and Governor in islands and continents he might discover or acquire.
“So after having expelled the Jews from your dominions, your Highnesses, in the same month of January, ordered me to proceed with a sufficient armament to the said regions of India, and for that purpose granted me great favors, and ennobled me that thenceforth I might call myself Don, and be High Admiral of the Sea, and perpetual Viceroy and Governor in all the islands and continents which I might discover and acquire, or which may hereafter he discovered and acquired in the ocean;”
The quoted wording follows the Fordham transcription, including its transmitted phrasing. Read beside the passage about conversion, it shows that the prologue connects Christian purpose with royal authority over prospective territories. This is a documentary juxtaposition, not a measurement of the relative importance of religion, wealth, or political power as motives.
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Columbus’s expedition is described in several documents, but they had different purposes and should not be treated as interchangeable accounts of motive.
- The April 1492 Capitulaciones: set out Columbus’s offices and rights in territories discovered.
- The passport: invoked service to God and the Catholic religion in a diplomatic document.
- The Journal prologue: narrated the mission, including the stated aim of learning how conversion might be carried out.
- The 1493 letters: were separate communications with their own audiences and textual histories.
King’s College London’s introduction to Columbus’s writings compares these different formulations. Their differences matter: a legal agreement, a passport, a voyage narrative, and letters do not make the same claims in the same way. Together they show religious language and Crown interests appearing across the documentary record; no single text transparently settles every question about policy or personal motive.
Names and language were also part of authority
King’s College London’s editors note that Columbus assigned Christian names to places even when he knew Indigenous names, and that he considered language both a practical barrier and a means of advancing Crown designs. This is the modern editor’s interpretation of the writings, not a direct quotation from Columbus. It adds another dimension to the record: describing and naming places could accompany claims to authority over them.
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The Journal survives through Las Casas’s digest
The original Journal and its known royal copy disappeared. The surviving text is an extensive digest made later by Bartolomé de las Casas: he summarized most entries and copied selected passages word for word. As a result, the Journal as preserved in Las Casas’s digest is not a direct, complete transcript of Columbus’s original.
That distinction is especially important when quoting. The prologue’s wording is available in the surviving transmission, but it should not be presented as though every sentence is certainly Columbus’s verbatim text. The early 1493 letters are separate documentary witnesses, not interchangeable copies of the Journal. King’s College London explains the Journal’s transmission and the related documents in its editorial introduction.
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How to read the evidence
The strongest conclusion is specific: Columbus’s Journal prologue, in the form preserved by Las Casas, explicitly joins a stated Christian conversion mission to the monarchs’ authority over territories Columbus might acquire. The wider documentary record uses religious language in other contexts too, while the documents’ different purposes and the Journal’s mediated survival limit what can safely be inferred about individual motive or Crown policy.
Readers seeking a fuller textual comparison can consult the UCLA Repertorium Columbianum, a scholarly series that provides original-language texts, English translations, textual variants, commentary, and glossaries.
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