Abstract
What is the relation between the thought of exteriority (that is, of an intellectually unencompassable Other taken to be a supreme source or condition of meaning) and the idealism, subjective or objective, that it reacts against? Eberhard Grisebach makes a good case study because his exteriority statement (Gegenwart, 1928) is unsurpassably extreme yet evolves in discernible stages from an idealist starting-point. After considering parallels with Buber and Levinas and criticisms from several sources, I argue that the exteriority strategy for thinking about community is indispensable even if its dedication to negating comprehension renders it sterile for many philosophical purposes.