“No one is strong enough – given the magnitude of the task, everyone has to step up their game.”

What makes us different? We’re the creature that can decide not to do something that we are capable of doing.

Probably more than anything else, the place that we really see the effects of the power of even the relatively mild temperature increases so far is in the melting of everything frozen on the planet.

The movers and shakers on our planet, aren’t the billionaires and generals, they are the incredible numbers of people around the world filled with love for neighbor and for the earth who are resisting, remaking, restoring, renewing and revitalising.

If you were running a solar company you may be okay – you may be able to keep growing. The question for physics is: Can you grow fast enough to begin to catch up with the damage?

I think we need to think of lots of ways to communicate. And we tried some at 350. We organised what they called the largest art project in the planet’s history. We do a lot with art and music and things.

We’ve been in lots of places that I suppose, by Oxford standards, would be considered illiterate, but everyone’s completely conversant with the idea that here is a number, and that number is above it, and that’s too high. It’s not a very complicated idea.

In the States, I think, the syllogism goes like this: ‘free markets solve all problems. Free markets aren’t solving global warming, QED global warming is not a problem’. It’s not a very good syllogism but it’s emotionally comforting if you’re in that world.

The ability to write compelling emails may be the single most useful talent an organizer can possess.

The world is on fire, and I’m doing my best to help steer the firetruck.

There is a tendency at every important but difficult crossroad to pretend that it’s not really there.

We spend a lot of time playing defence against bad things. So, in the US, one of the focusses has been this huge Keystone Pipeline project, another has been the coal ports on the Pacific Ocean.

Look – every time is the wrong time and the perfect time to have a kid, and you just do it when you can.

The laws of Congress and the laws of physics have grown increasingly divergent, and the laws of physics are not likely to yield.

I don’t spend a huge amount of time fixated on climate denial because I don’t think that their objections, though sometimes couched in science, are based in science. I think they’re based in ideology. And I don’t think there’s anything you can do.

We’d like to get the fossil fuel industry on the back foot for a while, having to deal with us.

The idea that China and India will just abandon climate action is not true, because they’re doing it for more reasons than we are.

I don’t like the glamour. I just like the game.

Certainly, if you can’t manage your game, you can’t play tournament golf.

If we are to preserve the integrity of golf as left to us by our forefathers, it is up to all of us to carry on the true spirit of the game.

We hadn’t lost morale. But when you fight for four quarters, it’s tough to always bounce back. The offense kept us in the game the last two weeks and to get out with a win feels really good.

What if?’ history is a tricky game, but there is no doubt that the senior planners of D-Day – including Eisenhower and the British general Bernard Montgomery – believed that the Double Cross operation had played a pivotal role in the victory.

For many years Hollywood held this double lure for me, tremendous sums of money for work that required no more effort than a game of pinochle.

The game embarrasses you until you feel inadequate.

I play golf with friends sometimes, but there are never friendly games.