Modest doubt is call'd The beacon of the wise.

~ William Shakespeare

William Shakespeare Proof Certainty

What men want is not knowledge but certainty.

~ Bertrand Russell

Bertrand Russell Proof Certainty

We often call a certainty a hope, to bring it luck.

~ Elizabeth Bibesco

Elizabeth Bibesco Luck Bring Certainty

We have to provide more visibility, more certainty to the investors and reduce the cost of failure.

~ Emmanuel Macron

Emmanuel Macron Cost Certainty Visibility

U.S. intelligence services routinely use collection methods against foreigners that foreseeably - with certainty - ingest high volumes of U.S. communications as well.

~ Barton Gellman

Barton Gellman High Well Certainty

Nobody knows the future with certainty. We can, however, identify ongoing patterns of change.

~ Alvin Toffler

Alvin Toffler Future Nobody Certainty