“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 am not saying that Hitler was a choir boy. But I am saying, let him who was innocent in the Second World War cast the first stone.”

“Who I am as a guitarist is defined by my failure to become Jimi Hendrix.”

“Pride is ugly. It says, 'If you succeed, I am a failure.'”

“I think it's going to be a very important, unique data set in terms of measuring the behavior of your lower body in space and trying to figure out what we can do to preserve bone and muscle density.”

“Biology is the science. Evolution is the concept that makes biology unique.”

“As a unique person, I was bullied badly as a teen.”

“They plot, they plot, sleeping or afoot they never let up.”

“You must become your enemy to truly understand him.”

“The police cannot be considered simply the custodians of the legal order, but must be seen as the guardians of the social order as well. That they defend it wearing blue uniforms rather than white ...”