Neither uncertainty nor the link between liquidity and the rate of interest are lacking in I. Fisher's theory. The distinction between Keynes and Fisher arises less from the analysis of capital evaluation than from the introduction of the concept of the demand for money, inherited by Keynes from Hawtrey. The keynesian statement of a monetary determination of the rate of interest rests on a dichotomy between consumption goods and capital goods, which is lacking in Fisher and Hawtrey as well.Ni l'incertitude, ni le lien entre liquidité et taux d'intérêt ne sont absents de la théorie d'I. Fisher. C'est moins l'analyse de l'évaluation du capital qui distingue Keynes et Fisher que l'introduction par Keynes du concept de demande de monnaie, repri...