You have to be careful as a libertarian because you can sound very Republican.

So we have to be careful because if you don't protect your culture you won't have it for very long.

To the folks walking around the District of Columbia, I would say this: 'Be careful.'

You got to be careful of the company you keep.

I don't have to be careful, I've got a gun.

All great sci-fi is: Be careful what you wish for.