Publius Aelius Hadrianus - Hadrian - was a man well qualified to distinguish between civilization and barbarism. He had studied with philosophers and ridden to war against headhunters; lived both in Athens and on an island in the Danube. Prior to his arrival in Britain he had been on a tour of military bases along the Rhine, and given orders for a great palisade to be built beyond the river's eastern bank. Now, standing beside the grey waters of the Tyne, Hadrian had plans for an even more formidable marvel of engineering.
- From Pax: War and Peace in Rome's Golden Age by Tom Holland