You know how they say, 'What happens in Vegas, stays in Vegas?' What happens in the Arctic doesn't stay in the Arctic.

Struggles only move forward when decent men and women step forward and say, 'enough is enough and no more.'

A movement only becomes a movement of substance, size, and power when the artists say 'we want to add our voice.'

Investing one cent more in oil, coal and gas is investing in the death of society, and the in the death of our children.

There is no definition of terrorism and there is still the reality that one person's terrorist is another person's freedom fighter.

Sandy was a climate change warning. Obama must now take the stage and fulfil the promise of hope the world needs.

The reality is today most of our political leaders want to be treated as gods and semi-gods, from the security details to the fuss around them and so on.

Whenever anybody called Nelson Mandela a saint, he would say: "If by saint you mean a sinner who is trying to be better, then I'm a saint."

If not one more cent in new aid money flowed [to Africa], we could with more urgency and efficiency and creativity be doing much more to take more people out of poverty.

In Durban, where I was born and grew up, and all over Africa, Nelson Mandela was a hero! Now he is a hero to the world.

I think even though he [Nelson Mandela] was feted and praised as he was, he always was at pains to say, I'm a human being.

Loneliness, dejection, the contempt or pity of people around you--these are unpleasant feelings. But they are precisely the things that produce genuine Dark Ones.

People must understand that science is inherently neither a potential for good nor for evil. It is a potential to be harnessed by man to do his bidding.

If it takes you apart, that's not love. Love puts you back together.

I don't try to knock 'em out, I just know I will

It's such a diversion to be constantly thinking of better ways I can teach people math that my hunger is for that really, for new ways of translating the beauty of it.

Every obstacle yields to stern resolve.

If the first words out of your mouth are to cry 'political correctness!', ... chances are very, very high that you are in fact part of the problem.

You're going to be unemployed if you really think you just have to sit around and wait for the muse to land on your shoulder.

No doubt, a scientist isn't necessarily penalized for being a complex, versatile, eccentric individual with lots of extra-scientific interests. But it certainly doesn't help him a bit.

Malevitch discovered abstraction as an experimental principle that can propel creative work to previously unheard levels of invention; this abstract work allowed much greater levels of creativity.