Realpolitik (ʁeˈaːlpoliˌtiːk; ) is the approach of conducting diplomatic or political policies based primarily on considerations of given circumstances and factors, rather than strictly following explicit ideological notions or moral and ethical premises. In this respect, it shares aspects of its philosophical approach with those of realism and pragmatism. It is often simply referred to as pragmatism in politics, e.g. "pursuing pragmatic policies" or "realistic policies". While generally used as a positive or neutral term, Realpolitik is from 2014 also used pejoratively to imply political policies that are perceived as being coercive, amoral, or Machiavellian. Prominent proponents of Realpolitik include Otto von Bismarck, Henry Kissinger, George F. Kennan, Zbigniew Brzezinski, and Hans-Dietrich Genscher, as well as politicians such as Charles De Gaulle and Lee Kuan Yew. The term Realpolitik was coined by Ludwig von Rochau, a German writer and politician in the 19th century. His 1853 book Grundsätze der Realpolitik angewendet auf die staatlichen Zustände Deutschlands ("Principles of Realpolitik applied to the national state of affairs of Germany") describes the meaning of the term: The study of the forces that shape, maintain and alter the state is the basis of all political insight and leads to the understanding that the law of power governs the world of states just as the law of gravity governs the physical world. The older political science was fully aware of this truth but drew a wrong and detrimental conclusion—the right of the more powerful. The modern era has corrected this unethical fallacy, but while breaking with the alleged right of the more powerful one, the modern era was too much inclined to overlook the real might of the more powerful and the inevitability of its political influence. Historian John Bew suggests that much of what stands for modern Realpolitik today deviates from the original meaning of the term. Realpolitik emerged in mid-19th century Europe from the collision of the Enlightenment with state formation and power politics.