Few challenges facing America and the world are more urgent than combating climate change. The science is beyond dispute and the facts are clear.

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.

I am loving. I am forgiving.I am at peace.

A good story makes a journey go by more quickly. A really good story makes you forget you are even on a journey.

Never underestimate yourself

Know this for sure: When you get the chance, go for it.

Maturity consists of no longer being taken in by oneself.

We never use the condition of the footballs as an excuse. We play with whatever or kick with whatever we have to use and that's the way it is.

The good he scorn'd Stalk'd off reluctant, like an ill-us'd ghost, Not to return; or if it did, its visits Like those of angels, short, and far between.

Anything that has to do with money, I want to be in that business.

We've had so many lifetimes of different cultures and different religions and different points of view and different wars and different loves and different children.

Argument weak; speak loudly!