Warren McCulloch resembled an Old Testament prophet – he had a long beard, bright and intense eyes, great personal warmth but also great passion. Indeed Gregory Bateson (1991, p. 225) describes him as “like Moses, a leader who could and did bring us to the edge of the promised land, where he himself could never enter”. His prophetic status can also be seen in a remark he frequently made, “Don't bite my finger, look where I am pointing” (quoted by Seymour Papert, introduction to McCulloch 1965, p. xxviii).