Dr. Sperry's position is complex and variegated, and I will be unable to discuss some of the issues raised by him in this volume and in other closely related papers. He has chosen to characterize his position generally as "emergent interactionism" and to spend a great deal of time distinguishing it from other views, ranging over the spectrum from dualism to materialism. His more general conception justifies and merits a more general response, which I shall present here.