Machiavelli notes that a prince is praised for keeping his word. However, he also notes that in reality, the most cunning princes succeed politically. A prince, therefore, should only keep his word when it suits his purposes, but do his utmost to maintain the illusion that he does keep his word and that he is reliable in that regard. Machiavelli advises the ruler to become a "great liar and deceiver", and that men are so easy to deceive, that the ruler won't have an issue with lying to others. He justifies this by saying that men are wicked, and never keep their words, therefore the ruler doesn't have to keep his.