I'm trying to keep a level head. You have to be careful out in the world. It's so easy to get turned.

You got to be careful of the company you keep.

Be careful going in search of adventure - it's ridiculously easy to find.

Words are power. And a book is full of words. Be careful what power you get from it. But know that you do.

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

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