Karel Kosík (26 June 1926 – 21 February 2003) was a Czech Marxist philosopher. In his most famous philosophical work, Dialectics of the Concrete (1963), Kosík presents an original reinterpretation of the ideas of Karl Marx in light of Martin Heidegger's phenomenology. His later essays can be called a sharp critique of the modern society from a leftist but not strictly Marxist position. Source: Wikipedia (en)