If you look closely at Moses in this image of a circa 1621 painting by Giovanni Lanfranco you can see that the painter has stuck a couple of horns on his head. What's up with that? I'm no biblical scholar but I'm pretty sure I would remember reading passages about horns growing out of someone's head and I'm sure that I've never heard a Sunday sermon about it.

This is another one of those historical art oddities like the ...