" ‎W. H. Auden once suggested that to understand your own country you need to have lived in at least two others. One can say something similar for periods of time: to understand your own century you need to have come to terms with at least two others. The key to learning something about the past might be a ruin or an archive but the means whereby we may understand it is--and always will be--ourselves. "

― Ian Mortimer , The Time Traveller's Guide to Medieval England: A Handbook for Visitors to the Fourteenth Century