Sentence examples for impossible to be sure from inspiring English sources

It's impossible to be sure.

It is often impossible to be sure what really motivates those who burn themselves to death.

"It is impossible to be sure how the markets are going to move," Naismith says.

But the only thing sure is that it is impossible to be sure.

Maybe, but it was impossible to be sure without another experiment.

It's impossible to be sure without a broad, scrupulously independent investigation.

Of course it is impossible to be sure that there is relatively more of it nowadays than at other times.

He had seven brothers, five of whom served in the Revolution, so it is impossible to be sure.

Without a soothsayer at hand, it is impossible to be sure how The Bone Season will fare.

It's been impossible to be sure, and a former Administration official once told me that this fact alone shows what a dysfunctional policymaking process it was.

Besides, how do you attend to the thoughts and concerns of the dying when medicine has made it almost impossible to be sure who the dying even are?