The ulterior motives with which you absorb and assimilate Evil are not your own but those of Evil.[Die Hintergedanken, mit denen du das Böse in dir aufnimmst, sind nicht die deinen, sondern die des Bösen.]
Source:Dearest Father: Stories and Other Writings (Schocken Books, ed. 1954), Chapter 2. Reflections on Sin, Suffering, Hope, and the True Way, Aphorisms 29, Page 37