Quotation of the Day…

by Don Boudreaux on August 24, 2011

in Economics, Seen and Unseen

… is from page 45 of David Friedman’s 1996 book, Hidden Order:

If the best things in life are free, meaning that you can consume as much as you want of them without giving up anything else (true of air, not true of love), then their marginal value is zero!


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