A change in the conditions of change

The poverty of historicism, we might say, is a poverty of imagination. The historicist continuously upbraids those who cannot imagine a change in their little worlds; yet it seems that the historicist is himself deficient in imagination, for he cannot imagine a change in the conditions of change.

Karl Popper, The Poverty of Historicism (Routledge Classics, 2002) p. 120