Anthony Grafton is the Henry Putnam University Professor of History at Princeton University. Desiderius Erasmus (1466–1536) was a Dutch humanist, scholar, and social critic, and one of the most important figures of the Renaissance. The Praise of Folly is perhaps his best-known work. Originally written to amuse his friend Sir Thomas More, this satiric celebration of pleasure, youth, and intoxication irreverently pokes fun at the pieties of theologians...