The shift to a cleaner energy economy wont happen overnight, and it will require tough choices along the way. But the debate is settled. Climate change is a fact.

You can’t let your failures define you. You have to let your failures teach you.

Change will not come if we wait for some other person or some other time. We are the ones we've been waiting for. We are the change that we seek.

Keep exploring. Keep dreaming. Keep asking why. Don’t settle for what you already know. Never stop believing in the power of your ideas, your imagination, your hard work to change the world.

When ignorant folks want to advertise their ignorance, you don't really have to do anything, you just let them talk.

Just because we have the best hammer does not mean that every problem is a nail.

Change is never easy, but always possible.

Don’t ever let anybody tell you that your efforts don’t matter or that your voice doesn’t count. Don’t ever believe that you can’t make a difference. You have.

Where you are right now doesn't have to determine where you'll end up.

Learning to stand in somebody else's shoes, to see through their eyes, that's how peace begins. And it's up to you to make that happen. Empathy is a quality of character that can change the world.

If somebody is different from you, that's not something you criticize, that's something that you appreciate.

Punk is about being an individual and going against the grain and standing up and saying 'This is who I am.

Freedom is the right to live without fear.

Cynicism, like gullibility, is a symptom of underdeveloped critical faculties.

Elections are also about the future - the pledges that we are making for this country. For those who care about equality and fairness in the UK, and beyond, Labour really is the only choice.

It is only to the gardener that time is a friend, giving each year more than he steals.

The American dream was not, at least at the beginning, a rags-to-riches type of narrow materialism.

An artist is not an isolated system. In order to survive he has to interact continuously with the world around him... Theoretically there are no limits to his involvement.

Nature wants children to be children before men... Childhood has its own seeing, thinking and feeling.

That day, I began to be incredulous. Or, rather, I regretted having been credulous. I regretted having allowed myself to be borne away by a passion of the mind. Such is credulity.

It now costs more to amuse a child than it once did to educate his father.