Introduction. PART ONE: Classical theory of production. The aggregate production function: a consideration of some existential problems. On the meaning of sectoral real value added. A Sraffian view. Are output proportions close to the Perron-Frobenius eigenvector proportions? Evidence from the Spanish wage-goods baskets (2010–2023). PART TWO: The Keynesian principle of effective demand and the Supermultiplier. Autonomous demand-led growth and the Supermultiplier: the theory, the model, and some clarification. Permanent demand, instability, and growth: Óscar Dejuán's contribution to post-Keynesian economics. European fiscal rules, demand-led growth, and the Supermultiplier. Financial constraints and the Supermultiplier: a Stock-Flow Consistent approach. PART THREE: Monetary macroeconomics. The ECB's monetary policy from 2007 to 2018: a long and turbulent decade. Aggregate demand deficiencies, functional finance, and the neutral interest rate. Bank accounting, transparency, and financial stability: lessons from the expected credit loss model. Financial accumulation in a financialised economy: lessons from Spain. PART FOUR: History of economic thought and methodological issues. The legacy of Pierangelo Garegnani. A re-assessment of some debated issues. Adam Smith's System of Natural Liberty: the gravitational force of the "morally restrained self-interest". Reflections on the Classical-Sraffian approach to surplus from an Ecological economics perspective. PART FIVE: Environmental and structural input–output analysis. How much would the Kyoto Protocol have cost households? Choice of techniques for minimising greenhouse-gas emissions: an input–output exercise for the 2020 Mexican economy. Scenarios of carbon emissions savings potential from differences in emissions intensities. Input–output techniques as a key methodology for firm-level carbon footprint calculation. The case of an academic event. Understanding global income inequality (1995–2020) through input–output analysis and vertical integration. Index.