Between 1928 through the mid-1930s, Leo Strauss and Gerhard Krüger carried on a philosophically intense exchange, until the war and related events cut the correspondence short. A series of debilitating strokes in the early 1950s prematurely ended Krüger's intellectual career, foreclosing the possibility of further serious engagement after the war. By that time, however, their respective intellectual paths, which had once closely coincided, had diverged. Still, a series of late exchanges concerning Krüger's 1969 Festschrift, to which Strauss contributed, testifies to their enduring mutual attachment.