The historical materialist cannot do without the concept of a present which is not a transition, in which time originates and has come to a standstill. For this concept defines precisely the present in which he writes history for his person. Historicism depicts the “eternal” picture of the past; the historical materialist, an experience with it, which stands alone. He leaves it to others to give themselves to the whore called “Once upon a time” in the bordello of historicism. 
- Walter Benjamin, On the Concept of History (1940)