In "Moses the Egyptian"--the centerpiece of Rigorism of Truth, the German philosopher Hans Blumenberg addresses two defining figures in the intellectual history of the twentieth century: Sigmund Freud and Hannah Arendt. Unpublished during his lifetime, this essay analyzes Freud's Moses and Monotheism (1939) and Arendt's Eichmann in Jerusalem (1963), and discovers in both a principled rigidity that turns...