“Perseverance is the hard work you do after you get tired of doing the hard work you already did.”

“I would replace most foreign aid with a tax credit for businesses to invest. I think U.S. bureaucrats giving foreign bureaucrats money is a guaranteed failure. And we've had about 50 years' experie...”

“If you take all the money we've spent at NASA since we landed on the moon and you had applied that money for incentives to the private sector, we would today probably have a permanent station on th...”

“One morning, just like 9/11, there's going to be a disaster. I have yet to see the United Nations do anything effective with either Iran or North Korea.”

“I don't see how the party that says it's the party of the family is going to adopt an immigration policy which destroys families that have been here a quarter century.”

“Both sides in Syria are bad. One side is a brutal dictator, and the other includes Islamists and terrorists who are dangerous already and who would be brutal in power if given the chance.”

“[I]n my own case at least I feel my professional need for freedom of speech and expression prejudices me toward a government whose constitution guarantees it.”

“If their social institutions were abhorrent, their unwritten constitution bordered upon the absurd. The absolutist monarchs of the ancient kingdoms of Amara looked with detestation at the Shazarian...”

“Constitutional democracy, you see, is no romantic notion. It's our defense against ourselves, the one foe who might defeat us.”

“Universe is nothing, but human thought.”

“Nothing is the whole story. The selfs curse and the writers.”

“There's a fine line, you know. Between having space and having nothing.”

“When you think you're right, you're most likely wrong.”

“Stand up for what is right even if you're standing alone.”

“If we go to war, it must only be with right on our side.”