Mathematics has given economics rigor, but alas, also mortis.
Robert Heilbroner
Robert L. Heilbroner was an American economist and historian of economic thought. The author of some two dozen books, Heilbroner was best known for The Worldly Philosophers: The Lives, Times and Ideas of the Great Economic Thinkers (1953), a survey of the lives and contributions of famous economists, notably Adam Smith, Karl Marx, and John Maynard Keynes.