“Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.”

“I took the initiative in moving forward a whole range of initiatives that have proven to be important to our country's economic growth, environmental protection, improvements in our educational system.”

“I think the cost of energy will come down when we make this transition to renewable energy.”

“A zebra does not change its spots.”

“Consider what kind of car you get. Buy cars and other products that have the least impact environmentally.”

“As I have said for many years throughout this land, we're borrowing money from China to buy oil from the Persian Gulf to burn it in ways that destroy the future of human civilization. Every bit of that has to change.”

“I was in elective politics for 24 years. I've made four national races, two for President, two for Vice President. I have found there are other ways to serve, and I'm enjoying them.”

“There's lots about politics I don't feel comfortable with. To talk about the politics of future ideas is impossible in soundbite form.”

“Our democracy, our constitutional framework is really a kind of software for harnessing the creativity and political imagination for all of our people. The American democratic system was an early political version of Napster.”

“Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.”

“The day I made that statement, about the inventing the internet, I was tired because I'd been up all night inventing the Camcorder.”