Even limited military actions end up carrying with them great costs and unintended consequences.

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.

Love is friendship set to music

I wish sometimes that the gods would either choose better, or make their wishes clearer

They say everything looks better with odd numbers of things. But sometimes I put even numbers—just to upset the critics.

I take quite a lot of pride in not knowing what´s cool".

A tool is but the extension of a man's hand and a machine is but a complex tool. And he that invents a machine augments the power of a man and the well-being of mankind.

Implementation of technological change must involve critics as well as advocates.

A newly married couple said, "What shall we do to make our love endure?" Said the Master, "Love other things together".

Put me on solid ground and I'll start tapping! At my age they say to keep moving.

I will never be by violence constrained to do anything.

I preserve things that are significant to me. Only time will determine what is important in the long term. But something can be rediscovered only if someone has collected and preserved it.