Foreword: on Marx's contemporary relevance -- Method -- The need for dialectics -- Dialectical logic and social phenomena -- The dialectics of individual and social phenomena -- Class-analysis and the sociology of non-equilibrium -- A dialectics of nature? -- Formal logic and dialectical logic -- Induction, deduction and verification -- Debates -- Recasting the issues -- Abstract labour as the only source of (surplus-) value -- The materiality of abstract labour -- The tendential fall in the average profit-rate (ARP) -- The transformation-'problem' -- The alien rationality of homo economicus -- Crises -- Alternative explanations -- The cyclical movement -- The subprime debacle -- Either Marx or Keynes -- Subjectivity -- Crisis-theory and the theory of knowledge -- Neither information-society nor service-society -- Individual knowledge -- Social knowledge -- Labour's knowledge -- Knowledge and value -- The general intellect -- Science, technique and alien knowledge -- Trans-epochal and trans-class knowledge -- Knowledge and transition.