Carl Menger

Carl Menger ( German:  [ˈmɛŋɐ]; February 23, 1840 – February 26, 1921) was the founder of the Austrian School of economics.

Menger contributed to the development of the theory of marginalism, (marginal utility), which rejected the cost-of-production theories of value, such as were developed by the classical economists such as Adam Smith and David Ricardo.