Wendy Lesser’s You Say to Brick is a major exploration of the architect’s life and work. Louis Kahn, perhaps more than any other twentieth-century American architect, was a “public” architect. Eschewing the usual corporate skyscrapers, hotels, and condominiums, he focused on medical and educational research facilities, government centers, museums, libraries, parks, religious buildings, and other structures that would serve the public good. Yet this warm, captivating person, beloved by students and admired by colleagues, was also a secretive and mysterious character hiding behind a series of masks.