Abstract
The author shows that the conception of epistemological realism as a contemporary variant of epistemological realism continues the realism tradition and at the same time takes into account some constructivist ideas, giving them a new interpretation. Constructive realism can be a fruitful strategy in cognitive studies, as it gives a philosophical interpretation of the current popular approach in cognitive science: so called “4 E approach”: understanding cognition as embodied, enacted. embedded and extended. The problem of Illusion and Reality is analyzed from the position of constructive realism. The relations between different surrounding worlds of different cognitive agents and the common real world is specially investigated in the context of the opposition between Realism and Relativism.