No doubt, man will continue to weigh and to measure, watch himself grow, and his Universe around him and with him, according to the ever growing powers of his tools.

There is no doubt that environmentally related diseases will continue to pose problems in the future.

There's no doubt I'm emotional.

No doubt the artist is the child of his time; but woe to him if he is also its disciple, or even its favorite.

If a man will begin with certainties, he shall end in doubts: but if he will be content to begin with doubts, he shall end in certainties.

Man, you've just got to take advantage of any situation that favors you. There's no doubt the guy is talented or they wouldn't have taken him so high in the draft, but it don't matter who's trying to keep away from their quarterback. My job is to take down the quarterback, not to worry about the guy standing in my way.