“It was the heart of any scam or fiddle -- keep the punter uncertain, or, if he is certain, make him certain of the wrong thing.”
“It's one thing to be certain, but you can be certain and you can be wrong.”
“Il n'est pas certain que tout soit incertain.(Translation: It is not certain that everything is uncertain.)”
“Certain blood was being shed for uncertain reasons.”
“Any humane and reasonable person must conclude that if the ends, however desireable, are uncertain and the means are horrible and certain, these means must not be employed.”
“He keeps this up, he's bound to be caught, she thought. And this time they'll dangle him for certain.”