One of the reasons surgeons have so much trouble separating Siamese twins is that nobody gets to do many of them. On the table, the anatomy is so different from normal, that you're constantly trying to figure out, 'Can I cut this? Does this wire lead to what?' It's like trying to defuse a bomb.

So if there were a container of contaminated urine, and somehow it managed to find its way to someplace a lot of damage could be done. Someone comes up to a lab worker. He knows he’s got the urine. ‘How would you like to have a million dollars?’ … Such things have been known to happen.

'Why risk?' I responded. 'It should be, why not to risk?'

When asked by Glenn Beck if people should be allowed to own semi-automatic weapons, Dr. Benjamin Carson said: “It depends on where you live. I think if you live in the midst of a lot of people, and I’m afraid that that semi-automatic weapon is going to fall into the hands of a crazy person, I would rather you not have it.

The kind of job doesn't matter. The length of time on the job doesn't matter... If you work hard and do your best, you'll be recognized and move onward.

Anyone who can't learn from other people's mistakes simply can't learn, and that;s all there is to it. There is value in the wrong way of doing things. The knowledge gained from errors contributes to our knowledge base.

I don't do a lot of talking. I do a lot of doing. And really, it says more about a person than how much they talk.