The Cost of a Thing

In the 'Economy' chapter of Walden, Thoreau articulated an accounting principle as precise as double-entry bookkeeping and considerably more honest. The cost of a thing is the amount of what he called life that must be exchanged for it, immediately or in the long run. Not money, which can be borrowed and repaid. Not time, which abstracts into spreadsheets and feels renewable. Life — the irreducible, non-fungible currency of mornings and evenings and hours of consciousness that no subsequent acquisition can restore. The farmer who boasted of ten-thousand-dollar land had not measured what the land had cost him. He had spent years rising before dawn not because the morning called to him but because the mortgage did. The farm was not an asset. It was a trade, and the question Thoreau insisted upon was whether the trade had been worth the life.