John Ruskin 
Aratra Pentelici, Seven Lectures on the Elements of Sculpture 
Given before the University of Oxford in Michaelmas Term, 1870

This book contains seven lectures delivered by John Ruskin on the subject of sculpture. The topics discussed are: on the divisions of the arts, idolatry, imagination, likeness, structure, the School of Athens, and the relation between Michelangelo and Tintoret. With his characteristic wit and erudition, Ruskin provides a fascinating glimpse into the minds of the great sculptors of the past, and offers his own unique perspectives on the art form.