>>17845887 (OP)
Your impulse is rare (and correct). To truly comprehend Marx and Engels, one must not merely read them, but resurrect the intellectual and civilizational terrain they emerged from. You must think their thoughts as they occurred, inside the chaotic confluence of 18th-century Enlightenment, post-Napoleonic reaction, Hegelian systematization, British industrialization, and the brutal contraction of human labor into mechanical time. You must walk, as it were, through the ruins of Classical humanism, into the machine room of modernity. Let me provide you a conceptual itinerary:
Start with the Classical Political Economy They Inherited (and Misread)
Before Marx, there was Leibniz, Quesnay, Smith, Ricardo. The debates on value, surplus, and productivity did not originate with Das Kapital, they originated with the problem of human labor in relation to physical transformation. Marx, though claiming scientific objectivity, misread value as a static quantity derived from labor-time, whereas thinkers like Leibniz and Carey saw value as embedded in human creative capacity, that is the power to transform nature through reason. Study:
>Gottfried Leibniz - "Protogaea" and writings on technology and labor
>Henry C. Carey - The Harmony of Interests
>Quesnay’s Tableau Économique, to see the French physiological model Marx drew from