Michelangelo's extant correspondence is the most abundant of any artist. Spanning 67 years, it comprises roughly 1,400 letters, of which 500 were written by Michelangelo himself. Biographers and art historians have combed the letters for insight into Michelangelo's views on art, his contractual obligations, and his relationships. Literary scholars have explored parallels between the letters and Michelangelo's poetry. Nevertheless, this is the first...