ContentsAcknowledgements viiA Revised Introduction to the English Edition: Kazimierz Kelles-Krauz’s Theory, Practice, and Purposeless Change (Helena Chmielewska-Szlajfer) 1The Sociological Law of Retrospection: The Law of Revolutionary Retrospection as a Consequence of Economic Materialism 29The Golden Age, State of Nature, and Development in Contradictions: From Studies into the Sources of Marxism 58Comtism and Marxism: Positivism and the Monistic Comprehension of History 92A Glance at the Development of Sociology in the 19th Century 110The Crisis of Marxism: On the So-Called ‘Crisis of Marxism’ 139What is Economic Materialism? 165A Few Main Principles in the Development of Art 190Psychiatry and the Science of Ideas 209The Social Dialectic in Vico’s Philosophy 225Bibliography 243Directory of Persons Referenced 248Name Index 252Subject Index 255