His most noticeable feature were his extraordinarily alert eyes, sometimes startling in the devotion and fixity of their gaze, as if what they were seeing at any given moment was of extreme importance, worthy not just of being seen but of being scrutinized, of being observed in the most exclusive manner, of being apprehended in order that each captured image could be stored in his memory, like a camera that couldn’t entirely depend upon its mechanical processes to register what it perceived and so had to try extra hard, to make a real effort.