The Power of Images

Where can the danger be lurking? Two soldiers are huddled together, one gazing up at the sky, the other darting a sideward glance. They derive a tacit reassurance from their weapons, but they are both in their different ways alone and scared. They were painted by Ambrogio Lorenzetti in the Palazzo Pubblico in Siena, and they seem symptomatic of a state of emergency: the year was 1338, and the spectre of the signoria, of rule by one man, was abroad in the city, undermining the very idea of the co