Aristotle's own solution is treated as a series of responses to his predecessors. His dialectical character and his subtle understanding of the complexity of human condition enable him to reach a dialectical and dynamic mean between these two extremes solutions. Aristotle objects Plato's attack of rhetoric, acknowledges its value, and secures its legitimate status in political life. But he also realizes the innate limitations of rhetoric. His theoretical solution to the tension lies in his theory of virtue and happiness. According to his ethics, virtue bridges these two series of goods, and in a virtuous person the tension does not exist. But this theory also has the same limitation of rhetoric in general, i.e., the lack of compulsory power. Therefore Aristotle, like Plato, tries to establish an ideal city, habituating the people to be truly virtuous through a series of legislative efforts. Good as it is, legislation cannot solve the tension permanently either, due to the universality of law. Therefore, when facing new situations or in critical moments, the system of law needs the supplement of decent and prudent politicians and through rhetoric. Thus, Aristotle establishes a virtuous circle between rhetoric and legislation, and such a dynamic system will give enough flexibility to deal with the complexity of human political life, and enables him to solve this tension successfully. / The first part presents two solutions given by Aristotle's predecessors. On the one hand, Gorgias, the representative rhetorician of that time began to reflect and champion the power of rhetoric. Such a theoretical reflection brought huge impact on Athenian political life. I treat Pericles and Alcibiades under Thucydides' depiction as spiritual heirs of Gorgias. They both try to solve the tension through rhetoric. On the other hand, Plato, fully realizing the limitation of rhetoric, attacks it in his Gorgias, and further in his Republic tries to solve this tension through legislation. / The tension between private and cornmon good is a problem for any human political society, and a central question for any political philosophy. This thesis tries to examine some attempts of solving this tension in ancient Greek context, and focuses on Aristotle's practical philosophy. / Liu, Wei. / Adviser: Qingjie Wang. / Source: Dissertation Abstracts International, Volume: 73-03, Section: A, page: . / Thesis (Ph.D.)--Chinese University of Hong Kong, 2010. / Includes bibliographical references (leaves 254-266). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Electronic reproduction. [Ann Arbor, MI] : ProQuest Information and Learning, [201-] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Abstract also in Chinese.