Karl Marx, born in 1818, was a German philosopher and revolutionary whose works, including 'Das Kapital' and 'The Communist Manifesto,' established the foundations of Marxism, a political and economic theory aimed at creating a classless society. He emphasized that consciousness is shaped by material conditions, which leads to class divisions, and argued that literature reflects and influences social institutions and ideologies. Marxist criticism evaluates how literature reflects class conflict and socio-economic influences while serving a potential ideological purpose.