Niccolo Machiavelli was an Italian Renaissance historian, politician, diplomat, philosopher, humanist and writer. His best-known work was book "The Prince", in which he described the ways that unscrupulous politicians rule. He is considered to be a prototype of a modern empirical scientist, because he practiced empiricism and realism instead of idealism. He didn't write about how the ruler should behave, but how successful and powerful rulers do behave in the real world. It is considered that his political views are best described in the sentence "The ends justify the means", aldo this words are not quoted from his writings. However, Machiavelli did claim, for example, that a ruler must be ready to act immorally at the right time, that he can use force to fight his enemies, and that he must keep masses in fear, so he could rule, even if they don't like him. Because of political advises like these, Machiavelli remained remembered in history even through well-known adjective "Machiavellian".