Most capital accumulation involves risk, because capital is committed to an investment without perfect certainty about future earnings.

Many drawings are attributed to this artist, often without perfect certainty.

She knew too, with perfect certainty, when her grip had first faltered.

Can you attain to any state of satisfaction and peace of mind without this perfect certainty?

And I knew, with perfect certainty, that such clumsy "accidents" wouldn't stop.

We can know then the truth of two sorts of propositions with perfect certainty.

While the standard-bearers on both sides posit from the margins of perfect certainty, the great majority learn nothing that they didn't already know about abortion.

I have had many failures, as you know, but this time I knew confidence and perfect certainty.

Few of the unsigned works later attributed to him are attributed with perfect certainty.

It is character - born of perfect certainty of touch and flowing freedom of line.