The UK is an extraordinary partner for America and a force for good in an unstable world. I hope it remains strong, robust and united.

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.

Books serve to show a man that those original thoughts of his aren't very new after all.

Earthly things will pass away. They will pass away and what will be left is my Savior.

It is not knowing, but the love of learning, that characterizes the scientific man.

Even when freshly washed and relieved of all obvious confections, children tend to be sticky.

Luckily, many other people tell me how they have had a particular landscape photograph of mine in their office or bedroom for 15 years and it always speaks to them strongly whenever they see it

True eloquence consists in saying all that is necessary, and nothing but what is necessary.

It took me forty years on earth To reach this sure conclusion: There is no Heaven but clarity, No Hell except confusion.

You decide every day who you will and will not be. Be bold in your decision but remember, choose wisely.

Keep in mind that other people's actions can never 'make' you feel any certain way. Feelings are your warning indicators.

That is not it at all, That is not what I meant, at all.