One more bit of lecture about vision and duty. The tougher road taken usually offers the biggest rewards and fulfillment. And if you require courage, and if you require any more inspiration, just take a look around these grounds one last time before you or your friends walk the lawn for final exercises. Thomas Jefferson, perhaps the greatest American ever, sat on a nearby mountaintop and envisioned a radically new type of university. One that reveres the truths of science and the lifelong pursuit of knowledge. One that places at the center of its design, not an exclusive house of worship committed to an unyielding catechism, but a library. A temple of knowledge. One that subversively upholds up an aristocracy of talent. Not of inherited wealth or social position. Think about it. His health was failing. He was deeply in debt, yet he had this one crazy idea. Just crazy enough to be compelling and to endure for two centuries now. He saw as his last earthly obligation, building an inclusive university. One specifically designed to train the leaders who'd tackle the future challenges of tomorrow. That's you. That's you. That's you and you and you. It's everybody in this room. He was talking to you back then and the burden rests with you now. A final word on leadership. 30 plus years working with politicians have convinced me that leaders to be most admired, whether they're conservatives or liberals, domestic or foreign, are those who seek to use the power of knowledge. Leaders who try to seize the instruments of government power to try fresh approaches. I don't care whether they're Newt Gingrich or Nancy Pelosi or Elizabeth Warren or Paul Ryan or Ronald Reagan or Barack Obama. Such leaders are policy entrepreneurs. They're bold men and women who, when faced with challenges, insist that we can do better. They challenge us to keep trying intelligent approaches, until we find one that works for the greater public good. Your predecessors got some things right. Your parent's generation expanded civil rights and individual liberty. We prevailed in the long twilight struggle against pernicious Soviet communists. The immutable fact of my youth, which I referred to in our first gathering here in January. The obscene Berlin Wall is gone. We've built relations with the world's most populous nation, China. And we've expanded alliance with the world's most populous democracy, India. And we survived a half century of Cold War. We've retired 90% of Moscow's and Washington's 60,000 nuclear warheads. But build on these efforts, please. Build on these efforts. Do not fall into the trap of feeling entitled to all sorts of government protections, ones we cannot possibly pay for. And if you still feel disheartened by the challenges ahead, recall what that sage student of policy history, Mr. John Belushi, asked us in Animal House. Did the Americans retreat when the Nazi's bombed Pearl Harbor? No, we did not. Now, whether you engage in a town meeting, or in a UN General Assembly, whether you're working in public transit here in Charlottesville or you're combating air pollution in Beijing, we've tried to prepare a toolkit that you can use to attack future policy challenges.