Even if somebody disagrees with you, their life is still valuable.

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.

When I look at the human brain I'm still in awe of it. Every single time you lift off the bone and open the durra and there it is - the human brain, the thing that gives a person a personality, that distinguishes each one of us, that there could be more than 6 billion of us here on this planet with brains that look the same, but each one being distinctly different because of what is going on in that thing. I'll never get over my awe of that.

Of course, no religious test for the presidency - every faith adds to our national character.

White liberals are the most racist people there are, because they put blacks in a box and insist that they think one way - and if they don't, they attack them as illegitimate, all the while denying that their policies destroy blacks.

Everybody has barriers and obstacles. If you look at them as containing fences that don't allow you to advance, then you're going to be a failure. If you look at them as hurdles that strengthen you each time you go over one, then you're going to be a success.

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.