"What has become clear from the science is that we cannot burn all of the fossil fuels without creating a very different planet."
"Only two things are infinite, the universe and human stupidity, and I'm not sure about the former."James Hansen on Albert Einstein
"Our scientific power has outrun our spiritual power. We have guided missiles and misguided men."James Hansen on Martin Luther King, Jr.
"Science investigates religion interprets. Science gives man knowledge which is power religion gives man wisdom which is control."James Hansen on Martin Luther King, Jr.
"No amount of experimentation can ever prove me right a single experiment can prove me wrong."James Hansen on Albert Einstein
"Bad times have a scientific value. These are occasions a good learner would not miss."James Hansen on Ralph Waldo Emerson
"Consider the perverse effect cap and trade has on altruistic actions. Say you decide to buy a small, high-efficiency car. That reduces your emissions, but not your country's. Instead it allows somebody else to buy a bigger S.U.V. - because the total emissions are set by the cap."
"Money has too big an influence on our politics in Washington and somehow we need to do something about that."
"I've tried to be a straight scientist doing the science and reporting it as best I can."
"You have no time to do the science if you're talking to the media."
"With a fourth generation of nuclear power, you can have a technology that will burn more than 99 percent of the energy in the fuel. It would mean that you don't need to mine uranium for the next thousand years."