The study of nature is a limitless field, the most fascinating adventure in the world.

Research is a passion with me; it drives me; it is my relentless master.

Keep your head up in failure, and your head down in success.

I want to make people around me happy, because I never know that laughter I gave to them would be my last gift I could offer.

We used to think that revolutions are the cause of change. Actually it is the other way around: change prepares the ground for revolution.

By the way, I'm funniest when I'm not being funny. I'm better to laugh at than with, pretty much.

I was thinking about this girl you love so much," she said, "And this place I love so much. And how that happens. How you can just fall into it.

I don't expect anybody here to cheerlead for Donald Trump. I expect us to have platforms like this, where we can fairly and effectively and respectfully come in and state the case on his behalf.

You can have anything you want, providing you first let go of wanting it.

For life: it is rather a determination not to be overwhelmed. For work: the truth can only be recalled, never invented.

How a hat makes you feel is what a hat is all about.

History serves as a model not only of who and what we are to be, we learn what to champion and what to avoid.