Believing in progress does not mean believing that progress has yet been made. That is not the sort of belief that indicates real faith.[An Fortschritt glauben heißt nicht glauben, daß ein Fortschritt schon geschehen ist. Das wäre kein Glauben.]
Source:Dearest Father: Stories and Other Writings (Schocken Books, ed. 1954), Chapter 2. Reflections on Sin, Suffering, Hope, and the True Way, Aphorisms 48, Page 39