Works by some of the greatest masters of the craft―Leonardo da Vinci

An introduction by Collins sets the sculptures in their cultural and art historical context

and the brilliant Roman emperor Augustus

and a transcription of a colloquium on the photographer's life and work

from Roman annexation to the Arab conquest

Notes toward a Conditional Art Pubs Excluded Works by some of theRobert Irwin Introduced and edited by Matthew Simms Robert Irwin began his career in the 1950s as an abstract painter. As a pioneer of the Light and Space movement in Los Angeles in the 1970s and early 80s, Irwin focused on exploring aesthetic perception as the fundamental feature of art, culminating in what he terms conditional art or site conditioned work. In addition to being a prolific artist, Irwin has been an active writer throughout his career.