We're [Clinton Foundation] trying to get rapid tests that give you results when you're right there on site at an affordable price. Ninety percent of the HIV-positive people in the world don't know they have the infection. An enormous amount of infections are being perpetrated by people who don't know they themselves are HIV positive.

If you voluntarily quit in the face of adversity, you'll wonder about it for the rest of your life.

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.

. . . unfortunately, we can't control the actions of everyone.

The earth is warming at an alarming rate, we are running out of fossil fuels, and it is long past time for us to take action to correct these problems.

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.

Let me say this as clearly as I can: No matter how sharp a grievance or how deep a hurt, there is no justification for killing innocents.