Beginning Scientific Afternote 2

"Much attention has rightly been given to Marx due to the groundbreaking work of The Communist Manifesto. However, he also wrote another monumental piece, Das Kapital (1867), an economic criticism of capitalism originally penned in German. In this work, Marx focuses on the concept of surplus value and highlights that the fundamental injustice of capitalism is that it encourages employers to create profits at the expense of the employees. The economic theories outlined in Das Kapital influenced numerous followers and helped generate the science of economics. To economists, the name "Marx" has a wholly different meaning than it does to political scientists. ... While Marx wrote a great deal about social and economic conditions endured by working populations during the 19th century, his legacy is still incredibly strong today in philosophical, sociological, and political thinking."

from "Marx, Karl" by Ian Morley in The Encyclopedia of Politics, Volume One: The Left, Rodney P. Carlisle, ed., SAGE Publications, Thousand Oaks: 2005, p. 303.