No one can change yesterday, but we can all change tomorrow.

There's this whole problem of trafficking, which has gotten worse in the economic downturn, which disproportionately affects young women, but also affects some young men who are sold into bondage, into basically servitude for indebted work that they can often never escape from.

This is a huge problem. If we don't deal with this within just a few years, you will have island nations flooded; you will have the agricultural balance of most countries completely changed; you will have a dramatic increase in the number of severe, unmanageable weather events... And the good news is that we can now deal with this problem - and strengthen our economic growth, not weaken it.

I have said many times-if I hadn't been exposed to music as a child I don't think I would have been president.

In today's knowledge-based economy, what you earn depends on what you learn. Jobs in the information technology sector, for example, pay 85 percent more than the private sector average.

People can quarrel with whether we should have more troops in Afghanistan or internationalize Iraq or whatever, but it is incontestable that on the day I left office, there were unaccounted for stocks of biological and chemical weapons.

If you take advantage of the fact that technology abolishes distance, then you won't need to go to India. Just go to Indiana.