challenge Quotes

We didn't go to the moon to explore or because it was in our DNA or because we're Americans. We went because we were at war and we felt a threat.

To paint is the most terrific thing that there is, but to do it well is very difficult.

If your opponent is of choleric temper, irritate him.

I have frequently been questioned, especially by women, of how I could reconcile family life with a scientific career. Well, it has not been easy.

I believe we have to nip Ebola in the bud before it spreads through Africa and to other countries.

Unless you are breaking stuff, you are not moving fast enough.

It's, like, even in journeys like Facebook, we've had some very serious ups and downs.

I normally take a long time finding titles. I finish the book and go into sweats for months afterwards trying to think of them.

I used to write a monthly column for the 'New York Times' syndicate. But I stopped because I found it really hard to have one extreme opinion a month. I don't know how these columnists have two or three ideas a week; I was having difficulty having 12 things to say a year.

Originality is dangerous.