Considerations on the fundamental principles of Pure Political Economy, II

Let us assume, with Prof. Edgeworth, that the reasons causing an individual to transform one economic good into another depend exclusively on the quantities he owns of those goods. We have seen that he will continue the transformation until it no longer brings him any profit, and this corresponds to the highest level of utility he can obtain from those economic goods through the transformation. This theorem is obviously valid regardless of the number of economic goods considered.