"One of the world's great thinkers, a polymath whose output covered vast terrains. He worked in 10 languages; he was a jet-age ascetic with few possessions; he explored Asia and South America on foot; and his obligations to his many collaborators led to a constant criss-crossing of the globe in the last two decades. … His critique of modernity was founded on a deep understanding of the birth of institutions in the 13th century, a critical period in church history which enlightened all of his work, whether about gender, reading or materiality. He was far more significant as an archaeologist of ideas, someone who helped us to see the present in a truer and richer perspective, than as an ideologue."