The polemical writings in this volume address the multifaceted relationship between history, philosophy, and politics. They defend historical materialism against contemporary anti-Marxist currents influenced by the Frankfurt School and postmodernism. They provide insight into classical Marxism as articulated by Marx, Engels, Plekhanov, Lenin, and Trotsky, and explain the philosophical and political questions that separate scientific socialism from the ideological currents that today influence numerous pseudo-left and anti-socialist movements.