I'm an old member of Greenpeace. I worried intensely, as I think most of my friends did, that the world was coming apart.

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.

Having a camera is not enough. You must understand, appreciate, and harness the power you hold!

For one to succeed, one must be a assured of failure.

They only let us live in millions for the sake of the economy. I don't know what will happen by the time they figure out how to run the economy without the people

Surfing makes me happy, so that's just what I'm going to keep doing.

No one is going to feel sorry for you, so you have to go out there and be fierce.

If you don't control your life, someone else will.

Usually when you hire more engineers, you actually don't get that much more done, you actually sometimes get less done.

We have to realize that we are as deeply afraid to live and to love as we are to die.

Have fun do good and the money will come

Young people want someone to tell them the truth. They want to be inspired.