The demand for certainty is one which is natural to man, but is nevertheless an intellectual vice. – Bertrand Russell
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
Don’t be too harsh to these poems until they’re typed. I always think typescript lends some sort of certainty: at least, if the things are bad then, they appear to be bad with conviction. – Dylan Thomas
We regard it as a certainty that the earth, enclosed between poles, is bounded by a spherical surface. – Nicolaus Copernicus
Only a very bad theologian would confuse the certainty that follows revelation with the truths that are revealed. They are entirely different things. – Denis Diderot
The Bush tax cuts, they ought to be made permanent in my mind so there is certainty out there. – Gary Herbert
The judgements about the severity of the threat posed by Iraq’s weapons of a mass destruction – WMD – were presented with a certainty that was not justified. – John Chilcot
And for mathematical science, he that doubts their certainty hath need of a dose of hellebore. – Joseph Glanvill
Many slaves on this continent are oppressed, and their cries have reached the ears of the Most High. Such are the purity and certainty of his judgments, that he cannot be partial in our favor. – John Woolman
That though we are certain of many things, yet that Certainty is no absolute Infallibility, there still remains the possibility of our being mistaken in all matters of humane Belief and Inquiry. – Joseph Glanvill
Certitude is not the test of certainty. We have been cocksure of many things that were not so. – Oliver Wendell Holmes, Jr.
The significance and volume of repairs that are needed across the country demand that we give state and local governments the long-term certainty they need to effectively execute these projects. – Sam Graves
One must verify or expel his doubts, and convert them into the certainty of Yes or NO. – Thomas Carlyle