 Rosenstock-Huessy always insisted that he was a Christian thinker. If he is known at all by people in the English speaking world it is as Rosenzweig’s ‘Christian’ dialogical partner and friend who tried, but failed, to convert Rosenzweig to Christianity. It is, however, important to understand what Rosenstock-Huessy meant by Christianity. The need to do this is also underscored by the fact that Rosenstock-Huessy was a thinker who wished to explicate what it means to be a Christian in a post-Christian age, i.e. in an age where most people not only no longer know what it means to be Christian but do not know that they do not know, and yet, nevertheless, are far more Christian than they realize.