Libertarianism is variously defined by sources as there is no general consensus among scholars on the definition nor on how one should use the term as a historical category. Scholars generally agree that libertarianism refers to the group of political philosophies which emphasize freedom, individual liberty and voluntary association. Libertarians generally advocate a society with little or no government power. The Stanford Encyclopedia of Philosophy defines libertarianism as the moral view that agents initially fully own themselves and have certain moral powers to acquire property rights in external things. Libertarian historian George Woodcock defines libertarianism as the philosophy that fundamentally doubts authority and advocates transforming society by reform or revolution. Libertarian philosopher Roderick T. Long defines libertarianism as "any political position that advocates a radical redistribution of power from the coercive state to voluntary associations of free individuals", whether "voluntary association" takes the form of the free market or of communal co-operatives. According to the American Libertarian Party, libertarianism is the advocacy of a government that is funded voluntarily and limited to protecting individuals from coercion and violence. There are many philosophical disagreements among proponents of libertarianism concerning questions of ideology, values and strategy. For instance, left-libertarians were the ones to coin the term as a synonym for anarchism. Outside of the United States, libertarianism is still synonymous with anarchism and socialism (social anarchism and libertarian socialism). Right-libertarianism, known in the United States simply as libertarianism, was coined as a synonym for classical liberalism in May 1955 by writer Dean Russell due to American liberals embracing progressivism and economic interventionism in the early 20th century after the Great Depression and with the New Deal. As a result, the term was co-opted in the mid-20th century to instead advocate laissez-faire capitalism and strong private property rights such as in land, infrastructure and natural resources. The main debate between the two forms of libertarianism therefore concerns the legitimacy of private property and its meaning. Most other debates remains within right-libertarianism as abortion, capital punishment, foreign affairs, LGBT rights and immigration are non-issues for left-libertarians whereas within right-libertarianism they are debated due to their divide between cultural liberal and cultural conservative right-libertarians. Philosophy Libertarian philosophies are generally divided on three principal questions, namely (1) by ethical theory, whether actions are determined to be moral consequentially or in terms of natural rights (or deontologically); (2) the legitimacy of private property; and (3) the legitimacy