An analysis by the Miller Center at the University of Virginia says, "Ultimately, the White House tapes must shape any assessment of Nixon's impact and legacy. They ended his presidency by furnishing proof of his involvement in the Watergate cover-up, fueled a generation's skepticism about political leaders, and today provide ample evidence of the political calculation behind the most important decisions of his presidency. They make his presidency an object lesson in the difference between image and reality, a lesson that each generation must learn anew."