This paper tried to locate the debate on man-nature relation in the Marxist tradition. It looks at Marx’s theory of alienation and dialectics and argues that his theory of alienation and dialectics is not limited to a critique of capitalist modernity but shows man’s alienation from nature. Developing on this thesis, this paper looks at Engel’s position on the place of nature in Marxism. We argue that Engels’s notion of ecological crisis in capitalism is a result of his idea of nature as above society as he argued in Dialectics of Nature. In Lukacs and western Marxism, Engel’s thesis of the dialectics of nature is criticised. We especially highlight how Engels’s notion of nature suffers the reification of capitalism.