I have to say, though, that when he says:
It’s a common view that Columbus was just interested in finding a spice route to the Indies, and that was his sales pitch to the Spanish courts. But I actually believe that contrary to conventional history, Columbus was looking for unknown continents — he just couldn’t pitch it that way.
I’d be curious to know the basis for that belief, or if it’s just wishful thinking or projection. My reading of the history does not indicate that Columbus was averse to making a buck.