
New Books in Intellectual History John Samuel Harpham, "Intellectual Origins of American Slavery: English Ideas in the Early Modern Atlantic World" (Harvard UP, 2025)
Jan 19, 2026
John Samuel Harpham, an Assistant Professor at the University of Oklahoma, dives into the intellectual origins of American slavery, tracing ideas from ancient Rome through early modern thinkers. He discusses how English authors leveraged Roman law and natural rights theories to justify slavery, blending moral logic with economic interests. Harpham examines the evolution of perceptions about Africa, including the influence of travel narratives and the notorious Prester John legend. His insights expose the complex interplay between race and the emerging institution of slavery.
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Bodin, Locke, And The Christian Exception
- Bodin and later thinkers introduced exceptions to Roman law, arguing Christian commonwealths need no slaves.
- Locke broadly follows the Roman model, yet left textual clues tying abstract theory to contemporary colonial practices.
Africa As The Idea-Source For The Trade
- Harpham shifts focus from colonies to Africa, arguing English ideas about African societies shaped justifications for the slave trade.
- He analyzes travel narratives (Hakluyt, Jobson, Leo Africanus) that presented Africa as politically organized and commercially engaged.
Civility Through Commerce And Prester John
- European reports and trade relations led Englishmen to see many African polities as 'civil' and fit for commerce.
- Prestor John and accounts of Meroe complicated views that Africa was uniformly uncivilized.




