In today's world, the elites are growing even more comfortable with one another across national lines, yet at the same time, less comfortable with low-income people who share their nationality. How we create those bonds of community that are truly global as well as national is one of our generation's great challenges.

Poverty is not only about income levels, but for lack of freedom that comes from physical insecurity

To be part of building a movement, you have to keep moving.

For too much of history, we've viewed the world's precious resources - both environmental and human - as things to extract, to make the most of in order to maximize their potential.

Nothing important happens in life without a cost.

The older I get, the more determined I feel to do whatever I can to help release that human potential somehow. Not in a fluffy way nor in a hardcore way. But in that middle ground, that marriage of love and power. I'm not afraid of either.

If you're looking at distributing alternative energy in Nigeria, for instance, what gets in your way is not people's ability to pay, not people's desire for a clean solar lamps or biomass opportunities. But there is a strong status quo that really depends on selling diesel.