Science is simply a powerful way of understanding what's real and what isn't, what's true and what's not. It can help us determine what works, what doesn't, for whom, and under what circumstances.

Preventing cardiovascular disease can help free up critical resources for treating HIV/AIDS and other illnesses.

When the U.S. claims the right to invade any country unilaterally and then defines a country like Iran or North Korea as 'evil,' then it is a rational response for these countries to develop nuclear weapons as the only military deterrent to invasion. We create what we most fear.

Too much power in any institution tends to stifle innovation.

I have an odd theory on happiness, and it bothers people. My general theory is that happiness is a reward for an animal doing what it should be doing. So if a horse runs, it feels happy. Or if you are too thin, you can't be happy, because evolution wants you to be tense and anxious, trying to wake up in the morning looking for food.

My baby is the joy in my life.

Half the joy of life is in little things taken on the run... but let us keep our hearts young and our eyes open that nothing worth our while shall escape us.

I'm sure, ever since I was really young, that happiness is not a bottle of champagne and a girl and a limousine and a swimming pool.