Running helps me stay on an even keel and in an optimistic frame of mind.

To the extent that our workers compete with low-paid Mexicans, it is as much through undocumented immigration as trade. This pattern threatens low-paid, low-skill U.S. workers. The combination of domestic reforms and NAFTA-related growth in Mexico will keep more Mexicans at home. It is likely that a reduction in immigration will increase the real wages of low-skilled urban and rural workers in the United States.

Advances in computer technology and the Internet have changed the way America works, learns, and communicates. The Internet has become an integral part of America's economic, political, and social life

When Galileo discovered he could use the tools of mathematics and mechanics to understand the motion of celestial bodies, he felt, in the words of one imminent researcher, that he had learned the language in which God recreated the universe. Today we are learning the language in which God created life. We are gaining ever more awe for the complexity, the beauty, the wonder of God's most devine and sacred gift.

The 22nd Amendment should probably be modified to say two consecutive terms instead of two terms for a lifetime.

I am grateful to President George W. Bush for PEPFAR, which is saving the lives of millions of people in poor countries and to both Presidents Bush for the work we've done together after the South Asia tsunami, Hurricane Katrina and the Haitian earthquake.

I haven't eaten at a McDonald's since I became President.