but one day his history teacher showed pupils a map of Alexander’s travels. “My jaw fell open, hit the desk, and I went home and said, ‘I want to study ancient history,’” he says.

The Roman jurist Gaius (fl c AD 160) got it in one: ‘The principal distinction in the law of persons is this, that all human beings are either free or slaves.’ We call them ‘chattel’ slaves, as in ...

At school, Sommer planned to specialize in sciences, but one day his history teacher showed pupils a map of Alexander’s travels. “My jaw fell open, hit the desk, and I went home and said, ‘I want to ...

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