The hard truth is carbon pollution has built up in our atmosphere for decades now. And even if we Americans do our part, the planet will slowly keep warming for some time to come.

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.

If living Life is an art, then Only You can be the artist to make it colorful.

Everything I try to hide ends up screaming from a mountaintop.

Stupidity is not a crime.

Man is equally incapable of seeing the nothingness from which he emerges and the infinity in which he is engulfed.

This is the only advanced pose (Firefly Pose) I know that you can run away from the police in.

The election of Senator Barack Obama brought jubilation across Africa, where millions celebrated him as 'one of their own.'

I know what I'm gonna do tomorrow, and the next day and the next year, and the year after that.

History often resembles myth, because they are both ultimately of the same stuff.

I enjoy many silent moments with my cat, a conversation always resumed exactly where left off.

Let women issue a declaration of independence sexually, and absolutely refuse to cohabit with men until they are acknowledged as equals in everything, and the victory would be won in a single week.