Many political scientists, focusing upon the concept of "political power," define politics as the pursuit of political power and competition for political power. John M. Pfiffner and Frank P. Sherwood define politics as "the process by which political power is acquired and exercised." Politics involves the pursuit, acquisition, and exercise of political power. What is the relationship between politics and political power? What is political power? What is political behavior? What is the relationship between political power and political behavior? What is the relationship between political power and public policy? What is the ultimate purpose of political power? What are two major forms of political power? What is political authority? When is political authority legitimate? What is political influence?