I'm not sure how it happened.

I'm not sure what I'm looking at.

But Mohammad Jawad felt certain

Not really sure why they show up, but they do.

It's definitely one of the two. I'm not really clear which one.

Not sure how this came to be, but it's not right.

Be sure to taste your words before you spit them out.

I'm not sure what Tom was talking about.

When I got back to his office, I wasn't really sure.

Something like that. I am not sure of that.

I am not sure what the prospects are for truly emerging from that impasse.

And it really is hidden. I can't find it in this image, and I'm not sure you can.

Quite why he had to pin her fingers to the floor with her brooch, I'm not sure. It seems a bit extreme to me.

There is obviously Einstein, Niels Bohr, de Fermat's last theorem, and I'm not sure whether that's James Coburn or Richard Harris.

He said that one of the reasons he invented bebop was that he was pretty sure that white musicians wouldn't be able to replicate the sound.

You've never really been sure of this, but I can assure you that this quirk you're so self conscious of is intensely endearing.

Then you sure won't want to eat fish that were raised in it, because it would be a kind of Sometimes you have a toxic bloom sometimes you don't.

While young people seem to be very sure about their participation in public policy making, but sometimes they're a little bit lost in terms of what they want for their personal life.

I'm not sure of how many of you in Washington are aware of the cultural developments happening in the region and, the more recent, Museum of Islamic Art opened in Qatar in 2008.

Your headmaster said to you I mean he found you kind of an enigma at your school he said, you're either going to be a millionaire or go to prison, and I'm not sure which.

You can be sure Jefferson knew what he was talking about when he said, If a nation expects to be ignorant and free in a state of civilization, it expects what never was, and never will be.

Now, one of the things that I refer to when I about the importance of this message is that I gave a lecture at the medical school at Kuwait University, where I lecture on the biological basis of behavior, and I gave the students two articles, one from The New York Times and one from New York magazine.

You know, ever since man had any notion that some of his other people, his colleagues, could be different, could be strange, could be severely depressed or what we now recognize as schizophrenia, he was certain that this kind of illness had to come from evil spirits getting into the body.

Do you go into your board and say, Look, I've got a fantastic idea for an embryonic product in a marginal market, with consumers we've never dealt with before, and I'm not sure it's going to have a big payoff, but it could be really, really big in the future?

As I said, I hope that today will be the last day of our work, but since I am not certain of the time of the day when we shall be able to meet again in the plenary to decide the budget, I want to take advantage of the broad presence of representatives in this Hall this morning to say a few words.