... I came to consult the chapter on Chaucer's encounter with Genoa's slave trade in Tartars; but the rest goes high on my To Be Read. Simply amazing -- striding across disciplines, in fluent language. It seems to have as one of its themes the lesser-known premodern slave trafficking that flourished alongside, in conjunction with, humanism and classicism. True that I've found hard to research the Genoese case; he explains that it's been swept under the carpet; they had a bad rep in their time, and historians of the Renaissance haven't wanted to know them.
Also, he says things like this:
Literature is, after all, the truest history: whereas historians synthesize data to bring us accounts of past places in their own present voices, literary scholars are able (from time to time) to fall silent, bringing us texts from the past in the past’s own idiom.