10. Ronald Reagan
Reagan is the only post-1929 President to be listed, and one of only two on this list who served in the 20th century. Reagan was quoted as saying that “the heart and soul” of conservatism is libertarianism. Additionally, he is much less hawkish than some modern conservatives wish to remember. While many of his efforts to shrink government were hindered by Congress (and Reagan himself favored some big government with projects like the War on Drugs), Reagan truly made it cool again to believe in small government.