America"s first celebrated economist-developer of the Fisher equation, the Fisher hypothesis, and the Fisher separation theorem-offers here a rational foundation for the most fundamental of concepts behind the modern economics: capital and income. This 1906 textbooks explores such ideas as. . the difference between wealth and property rights . why one bankruptcy leads to another . the difficulties of defining income . the "premium" and "price" concepts of interest . risk in the economic arena . and much more.