The main environmental challenge of the 21st century is poverty. When you don't know where your next meal is coming from, it's hard to consider the environment 100 years down the line.

The obvious issue is providing clean drinking water and sanitation to every single human being on earth at the cost of little more than one year of the Kyoto treaty.

The Kyoto treaty has an estimated cost of between US$150 and $350 billion a year, starting in 2010.

My suggestion is that we should first work to ensure the Third World has clean drinking water and sanitation.

Wishful thinking is not sound public policy.

We need to invest dramatically in green energy, making solar panels so cheap that everybody wants them. Nobody wanted to buy a computer in 1950, but once they got cheap, everyone bought them.

Money spent on carbon cuts is money we can't use for effective investments in food aid, micronutrients, HIV/AIDS prevention, health and education infrastructure, and clean water and sanitation.

On average, global warming is not going to harm the developing world.

The fact that we're catching more fish per person than we've ever done before doesn't mean that there are not particular places where we've managed fisheries badly.

Global warming is real - it is man-made and it is an important problem. But it is not the end of the world.

Think on a 50-year scale, which is a much more natural time-scale for global warming. The US is right now spending about 200 million dollars annually on research into renewable energy.

They both looked at me in a way that was fast becoming familiar: two parts bafflement to one part awe at my talent for making a bad situation worse.

Don't dilute yourself for any person or any reason. You are enough! Be unapologetically you.

A person needs at intervals to separate himself from family and companions and go to new places. He must go without his familiars in order to be open to influences to change.

There can be goodness without much intelligence - but it seems to me that perfect intelligence and perfect goodness must go together.

There are only two things I can't give up; one is coffee and the other is tobacco.

When you are pulling people out of the water and off of rooftops, there are no Republicans and no Democrats.

It is hoped that by God's assistance, some of the continents in the Ocean will be discovered ... for the Glory of God.

I've always been interested in directing. I started acting when I was thirteen years old, so I've had some desire to do something else in my life.

There is a kind of magicness about going far away and then coming back all changed.

My experience has to be funnelled through a black experience or a white experience, or it doesn't exist, because that's how we're going to deal with the world.