- The Blessed Soul is female, with a classical profile and a classical coiffure, crowned with a garland of roses frozen forever. Between her parted lips we can just detect a row of perfect teeth, a feat of detailing that the ancient Greeks and Romans regarded as proof of a consummate sculptor—and Bernini had no intention of lagging behind the ancients, or anyone else. The blessed soul’s eyes are carved with irises and pupils upturned toward her heavenly reward, like the pearly-skinned damsels that the painter Guido Reni was churning out at the same moment. In her perfection, the Blessed Soullacks every trace of personality, but perhaps this is the point; she has been purified of every fault.
- The Damned Soul, by contrast, is male, and unmistakably individual, from his definite features—heavy brow, corrugated forehead, a wisp of mustache—to his wild expression and his crazy flamelike hair, bristling with horror at what he sees before him. He is a self-portrait of Bernini, making faces in a mirror as he envisions the torments of Hell, and we can see not only his full set of rather sharp teeth but also his tongue, so highly polished that it seems realistically wet. To suggest the infernal flames reflected in the Damned Soul’s dark, intent eyes, Bernini has hollowed out their irises, leaving a pinpoint of white marble in the center of each to capture a fiery gleam.
http://www.nybooks.com/articles/archives/2015/jun/04/bernini-he-had-touch/