This is the kind of book that is all too rare in modern historical scholarship. It is at once meticulously researched, granitically organized, perceptively argued, and eminently readable. The last is no mean achievement when one considers the subject matter. Banks, investments, credit, and debt may be important for our understanding of medieval and Renaissance Italy, but as anyone who has balanced a checkbook or read an annuity report can attest, it can all be dreadfully boring. Not so here.—Thomas FMadden, Sixteenth Century Journal