“Climate change is real. Climate change is being substantially increased by humans and the carbon we put into the atmosphere. And it appears to be speeding up. If science has made any mistakes, scie...”

“Science by itself is about numbers, and it's about measuring things. It's very important but it's very dry.”

“When I worked with wildlife a lot in the Eighties and Nineties, I learnt the meaning of patience. And when I worked with trees, I learned the meaning of humility.”

“You should not think on a small scale”

“For small creatures such as we the vastness is bearable only through love.”

“It doesn't sound that cool to say it, but I still get nervous for any show. But it's different degrees - playing a small basement of a club versus playing a festival like Firefly or Bonnaroo. The f...”

“I don't think the human race will survive the next thousand years, unless we spread into space.”

“Let a nation's fervent thanks make some amends for the toils and sufferings of those who survive.”

“If we survive danger it steels our courage more than anything else.”

“Thought leadership is first and foremost life leadership.”

“More powerful than the mighty armies is an idea whose time has come.”

“In what you say of another, apply the test of kindness, necessity and truth, and let nothing pass your lips without a 2/3 majority.”