Exhibition at the Gemäldegalerie explores myths around the artist's mental state popularised by a later painting, as well as his position in Western art history

The practice of connoisseurship, which, the author Frédéric Elsig argues, is a skill that can be learned, is examined in relation to 15th-and 16th-century painting

Archaeologists say the tablets, unearthed nearly a century ago, are akin to receipts