Although history-making is necessary for explaining how ideas came to be, the task is always hampered by the curse of what we know now. Part of what excites academics is mining classics for ideas relevant today. But even so, the effect is still astounding when a writer is truly prescient. It’s either revealing of my data-mining or of Hume’s brilliance that many of his best insights are not even central to but rather simply supporting his claims.
“Mathematics, indeed, are useful in all mechanical operations, and arithmetic in almost every art and profession: but it is not of themselves they have any influence. Mechanics are the art of regulating the motions of bodies to some designed end or purpose…A merchant is desirous of knowing the sum total of his accounts with any person: why? but that he may learn what sum will have the same effects in paying his debt…Abstract or demonstrative reasoning, therefore, never influences any of our actions, but only as it directs our judgement concerning causes and effects…”
Hume is famous for making causation central to a theory of human understanding, but to express so clearly that rationality, the ability to make sense of the world is not about seeking truth for instance, but about determining the causal structure of the world is impressive.
“Men generally fix their affections more on what they are posses of, than on what they never enjoyed: for this reason, it would be greater cruelty to dispossess a man of anything, than not to give it to him. But who will assert this is the only foundation of justice?”
In two sentences, Hume has laid out the basis of prospect theory, one of the most influential modern theories of accounting for the actual evidence of human decision-making, and demonstrated that a theory of justice can have a psychological basis. Amazing.
“it is by society alone he [mankind] is able to supply his defects, and raise himself up to an equality with his fellow-creatures, and even acquire a superiority above them. By society all his infirmities are compensated; and though in that situation his wants multiply every moment upon him, yet his abilities are still more augmented, and leave him in every respect more satisfied and happy than it is possible for him, in his savage and solitary conditions, ever to become. When every individual person labors apart, and only for himself, his force is too small to execute any considerable work; his labor being employed in supplying all his different necessities, he never attains a perfection in any art and as his force and success are not at all times equal, the least failure in either of these particulars must be attended with inevitable run and misery”
It’s well known that Hume and Adam Smith conferred intimately, but the ideas expressed here in “A Treatise on Human Nature” precedes those fleshed out in “The Wealth of Nations” by about 35 years. I also found in interesting that Hume identified smoothing out risk as a central task of market economies. Hume performs magnificently.