The Theory of Interest as Determined by Impatience to Spend Income and Opportunity to Invest It | Irving Fisher
Few American economists have exerted an international influence equal to that of Yale professor Irving Fisher (1867-1947) who excelled as a statistician, econometrician, mathematician, and pure theorist. Of his 18 published volumes on economics, those in monetary economics constitute his most enduring contribution; indeed much of Fisher's work on capital, interest, income, money, prices and business cycles has been incorporated into modern analyses. Of all his works, "The Theory of Interest" is especially significant; not only does it contain his celebrated theory in which the rate of interest is shown to be dependent upon all other elements involving productivity, time preference, risk and uncertainty, but also a strikingly original explanation of the broader capitalistic process.
The Theory of Interest as Determined by Impatience to Spend Income and Opportunity to Invest It | 
