A student of Renaissance devotional painting and spirituality at large, Bill Viola produces video art grander in scope and freer in dynamism than most of his contemporaries. Though the medium has often drifted toward conceptual and methodic experimentation, video art has always had an expressive side that allows for a great deal of compositional freedom. Viola’s work has explored ancient forms of spirituality, such as Zen Buddhism, Christian mysticism, and Sufism, as well as their intersection with geopolitics and technology.