His unrivaled genius as an ideological novelist was this capacity to invent actions and situations in which ideas dominate behavior without the latter becoming allegorical. He possessed what I call an eschatological imagination, one that could envision putting ideas into action and then following them out to their ultimate consequences. At the same time, his characters respond to such consequences according to the ordinary moral and social standards prevalent in their milieu, and it is the fusion of these two levels that provides Dostoevsky's novels with both their imaginative range and their realistic grounding in social life.