“At the end of the day, no amount of investing, no amount of clean electrons, no amount of energy efficiency will save the natural world if we are not paying attention to it - if we are not paying attention to all the things that nature give us for free: clean air, clean water, breathtaking vistas, mountains for skiing, rivers for fishing, oceans for sailing, sunsets for poets, and landscapes for painters. What good is it to have wind-powered lights to brighten the night if you can't see anything green during the day? Just because we can't sell shares in nature doesn't mean it has no value.”

“The ideal country in a flat world is the one with no natural resources, because countries with no natural resources tend to dig inside themselves. They try to tap the energy, entrepreneurship, creativity, and intelligence of their own people-men and women-rather than drill an oil well.”

“So what am I? I guess I would call myself a sober optimist...If you are not sober about the scale of the challenge, then you are not paying attention. But if you are not an optimist, you have no chance of generating the kind of mass movement needed to achieve the needed scale.”

“In my world, you don’t get to call yourself “pro-life” and be against common-sense gun control — like banning public access to the kind of semiautomatic assault rifle, designed for warfare, that was used recently in a Colorado theater. You don’t get to call yourself “pro-life” and want to shut down the Environmental Protection Agency, which ensures clean air and clean water, prevents childhood asthma, preserves biodiversity and combats climate change that could disrupt every life on the planet. You don’t get to call yourself “pro-life” and oppose programs like Head Start that provide basic education, health and nutrition for the most disadvantaged children...The term “pro-life” should be a shorthand for respect for the sanctity of life. But I will not let that label apply to people for whom sanctity for life begins at conception and ends at birth. What about the rest of life? Respect for the sanctity of life, if you believe that it begins at conception, cannot end at birth.”

“Even the most ardent environmentalist doesn't really want to stop pollution. If he thinks about it, and doesn't just talk about it, he wants to have the right amount of pollution. We can't really afford to eliminate it - not without abandoning all the benefits of technology that we not only enjoy but on which we depend.”

“When Muslim radicals and fundamentalists look at the West, they see only the openness that makes us, in their eyes, decadent and promiscuous. They see only the openness that has produced Britney Spears and Janet Jackson. They do not see, and do not want to see, the openness - the freedom of thought and inquiry - that has made us powerful, the openness that has produced Bill Gates and Sally Ride. They deliberately define it all as decadence. Because if openness, women's empowerment, and freedom of thought and inquiry are the real sources of the West's economic strength, then the Arab-Muslim world would have to change. And the fundamentalists and extremists do not want to change.”

“Money as such is a useful invention, making commerce possible beyond the state of barter. A moderate amount is necessary to us all-but consider :of all the things you buy , that which you buy dearest of all is money. For money you sell the hours, the days of your life, which are the only true wealth you have. You sell the sunshine, the dawn and the dusk , the moon and the stars, the wind and the rain, the green fields and the flowers, the rivers and the sweet fresh air. You sell health and joy and freedom”