Piero della Francesca in America; The Frick Collection. Through May 19. Of all the visual engines pulling the long freight train of Western art, alone, inscrutable, regal is Piero della Francesca. With Giotto, Velázquez, Goya, Cézanne, and several others, Piero—as he’s always referred to, like a familiar—is perhaps the Western painter most universally loved by artists. The towering majesty, poignant silences, mystic geometries, and stately, breathtaking color in his scenes of saints in conversation, contemplation, or simply standing are spellbinding sources of awe, magnificence, and an almost immortal optical poetry. Piero gives us the astounding power and plaintiveness of early Italian Renaissance art, shakes us to our moral core, bringing the intellectual, spiritual, emotional, and soulful closer together than any artist who ever lived. I want to say Piero is perfect.