The phrase "attain certainty" is correct and usable in written English.
It typically means to gain a sense of assurance or full confidence in something. You might use it in a sentence such as, "By reading the contract thoroughly, he was able to attain certainty as to its contents."
One of the key claims the proponents of common law make is that through the evolution of principles and precedent, we attain certainty and a high degree of objectivity.
We can in fact attain certainty, and we can do so by the unaided exercise of our natural intellectual powers.
He therefore opposes both skepticism, which denies the possibility of certain knowledge, and illuminationism, which insists that we need special divine illumination in order to attain certainty.
For Baudrillard, the latter always elude capture by the former, thus philosophy is an "impossible exchange" in which it is impossible to grasp the truth of the world, to attain certainty, to establish a foundation for philosophy, and/or produce a defensible philosophical system.
At a talk in 1628, Descartes denied the alchemist Chandoux's claim that probabilities are as good as certainties in science and demonstrated his own method for attaining certainty.
Scientific knowledge is divided into three basic categories (viz. historical, philosophical, and mathematical) and each category is again sub-divided into particular scientific disciplines.[18] According to Wolff, both common and scientific knowledge are grounded in the conviction humans display for attaining certainty in their beliefs.
Participants shown the 9/11 video scored significantly higher on the N.F.C. scale; in short, simply seeing the terrorist film — not even being in an actual crisis environment — was enough to trigger a heightened need to attain cognitive certainty and resolution.
"This deal, like our Lakers' deal, furthers our efforts to attain greater certainty and control over local and regional sports programming costs," David Rone, the president of Time Warner Cable Sports, said of the Dodgers agreement in a statement.
Metaphysical first principles as known by the intellect acting alone should attain absolute certainty.
No judgment aiming at such truth can, however, ever attain apodictic certainty, and so we ought, as reasonable beings at least, to be satisfied with less than that.
Like the skeptics, Agrippa as rhetorician questioned his (or anyone's) ability to attain absolute certainty, but unlike the extreme (or Pyrrhonist) skeptics of ancient times and like such ancient Academic skeptics as Cicero, he believed that on many issues, probable truth could be demonstrated.
