The essay explains why, for Christians, responsible acting and living means
responding to Christ and neighbour, and not to a `responsible self'. The history of
the concept, `responsibility', is traced from its origin in Roman juridical
language, by way of its being theologised in medieval times, up to the peculiar
moral slant it acquired in modernity. The author challenges the mainstream
understanding of `responsibility as accountability' by demonstrating that it rests
on a theological mistake which ultimately invites moral self-justification. This is
demonstrated by critically contrasting H. R. Niebuhr's `responsible self' with
Bonhoeffer's account of' responsible action'.