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Climate Change is a national security issue. We found that climate instability will lead to instability in geopolitics and impact American military operations around the world. People are saying they want to be perfectly convinced about climate science projections. But speaking as a soldier, we never have 100 percent certainty. If you wait until you have 100 percent certainty, something bad is going to happen on the battlefield.
Gordon R. SullivanWhile the dogmatist is harmful, the sceptic is useless ...; one is certain of knowing, the other of not knowing. What philosophy should dissipate is certainty, whether of knowledge or of ignorance. Knowledge is not so precise a concept as is commonly thought. Instead of saying 'I know this', we ought to say 'I more or less know something more or less like this'. ... Knowledge in practical affairs has not the certainty or the precision of arithmetic.
Bertrand RussellOut of the element of participation follows the certainty of faith; out of the element of separation follows the doubt in faith. And each is essential for the nature of faith. Sometimes certainty conquers doubt, but it cannot eliminate doubt. The conquered of today may become the conqueror of tomorrow. Sometimes doubt conquers faith, but it still contains faith. Otherwise it would be indifference.
Paul TillichThe very foundation of science is to keep the door open to doubt. Precisely because we keep questioning everything, especially our own premises, we are always ready to improve our knowledge. Therefore a good scientist is never โcertainโ. Lack of certainty is precisely what makes conclusions more reliable than the conclusions of those who are certain: because the good scientist will be ready to shift to a different point of view if better elements of evidence, or novel arguments emerge. Therefore certainty is not only something of no use, but is in fact damaging, if we value reliability.
Carlo RovelliEvery patient reacts a little differently, both biologically and psychologically. The only constant in cancer is inconstancy; the only certainty is a future of uncertainty, a truism for all of modern life but one made vivid by life-threatening illness.
Jonathan AlterThe main thing that endears the United Nations to member governments, and so enables it to survive, is its proven capacity to fail... You can safely appeal to the UN in the comfortable certainty that it will let you down.
Conor Cruise O'BrienAnd when I wake up it's wonderful, like I've been carried quietly onto a calm, peaceful shore, and the dream, and its meaning, has broken over me like a wave and is ebbing away now, leaving me with a single, solid certainty. I know now.
Lauren OliverThe American people want us to stop spending. And so let's just give them some certainty. Let's extend the tax - the existing tax cuts. And then let's give some more tax breaks to small businesses and large. And then maybe the American people will have some confidence.
John McCainGenius is neither learned nor acquired. It is knowing without experience. It is risking without fear of failure. It is perception without touch. It is understanding without research. It is certainty without proof. It is ability without practice. It is invention without limitations. It is imagination without boundaries. It is creativity without constraints. It is...extraordinary intelligence!
Patricia PolaccoShe loved Bram in a clear-eyed way sheโd never loved her ex-husband, no rose-colored glasses or mindless giddiness, no Cinderella fantasies or false certainty that heโd put her life in order. What she felt for Bram was messy, honest, and soul-deep. He felt likeโฆpart of her, the best and the worst. Like someone she wanted to struggle through life with; share triumphs and catastrophes; share holidays, birthdays, every days
Susan Elizabeth PhillipsWe can never establish with certainty what part of our relations with others is the result of our emotions - love, antipathy, charity, or malice - and what part is predetermined by the constant power play among individuals.
Milan KunderaHe wondered how he could ever have thought of the planets, even of the Earth, as islands of life and reality floating in a deadly void. Now with a certainty which never after deserted him, he saw the planets - as mere holes or gaps in the living heaven - excluded and rejected wastes of heavy matter and murky air, formed not by addition to, but by subtraction from, the surrounding brightness.
C. S. LewisCogito cogito ergo cogito sum -- "I think that I think, therefore I think that I am;" as close an approach to certainty as any philosopher has yet made.
Ambrose BierceI know with certainty, that [an honest man] is not to put his hand into the fire, and hold it there, till it be consumed: And thisevent, I think I can foretell with the same assurance, as that, if he throw himself out at the window, and meet with no obstruction, he will not remain a moment suspended in the air.
David HumeOh, the truth, oh yeah, lot of trouble that got us into, didn't it, over the last maybe thousand years? Hitler knew the truth, so did Stalin, so did Mao Zedong, so did the Inquisition. They all knew the truth and that caused such horror. Certainty is the enemy.
Anthony HopkinsKnowing the precies answers is not as crucial as the certainty that the answers do, in fact, exist.
Chris HeimerdingerNo plan of operations extends with any certainty beyond the first contact with the main hostile force.
Helmuth von Moltke the ElderOne third, more or less, of all the sorrow that the person I think I am must endure is unavoidable. It is the sorrow inherent in the human condition, the price we must pay for being sentient and self-conscious organisms, aspirants to liberation, but subject to the laws of nature and under orders to keep on marching, through irreversible time, through a world wholly indifferent to our well-being, toward decrepitude and the certainty of death. The remaining two thirds of all sorrow is homemade and, so far as the universe is concerned, unnecessary.
Aldous HuxleyIn spite of the opinions of certain narrow-minded people who would shut up the human race upon this globe, we shall one day travel to the Moon, the planets, and the stars with the same facility, rapidity and certainty as we now make the ocean voyage from Liverpool to New York.
Jules VerneAlthough I was first drawn to math and science by the certainty they promised, today I find the unanswered questions and the unexpected connections at least as attractive.
Lisa RandallI don't believe anything. I only know some things to a greater degree of certainty than others.
John RymanLove must neither beg nor demand. Love must be strong enough to find certainty within itself. It then cease to be moved and becomes the mover.
Hermann Hesseas a bird swoops down on it's prey, and assumes this land bound wretch into heaven, so did romeo steal her lips before they fled him again. suspended somewhere between cherubs and devils, his quarry ceased to buck, and he spread his wings wide and let the rising wind carry them off across the sky, until even the predator himself had lost every hope of returning home. within that one embrace, [he] became aware of a feeling of certainty he had not thought possible for anyone - even the virtuous. with her in his arms, all other women, past, present, and future, simply ceased to exist.
Anne FortierI then began to study arithmetical questions without any great apparent result, and without suspecting that they could have the least connexion with my previous researches. Disgusted at my want of success, I went away to spend a few days at the seaside, and thought of entirely different things. One day, as I was walking on the cliff, the idea came to me, again with the same characteristics of conciseness, suddenness, and immediate certainty, that arithmetical transformations of indefinite ternary quadratic forms are identical with those of non-Euclidian geometry.
Henri PoincareThis is what it is to be human: to see the essential existential futility of all action, all striving -- and to act, to strive. This is what it is to be human: to reach forever beyond your grasp. This is what it is to be human: to live forever or die trying. This is what it is to be human: to perpetually ask the unanswerable questions, in the hope that the asking of them will somehow hasten the day when they will be answered. This is what it is to be human: to strive in the face of the certainty of failure. This is what it is to be human: to persist.
Spider Robinson"What is the meaning of life?" This question has no answer except in the history of how it came to be asked. There is no answer because words have meaning, not life or persons or the universe itself. Our search for certainty rests in our attempts at understanding the history of all individual selves and all civilizations. Beyond that, there is only awe.
Julian JaynesBut no one can predict of a certainty what will happen. And none of it will change how I intend to spend the rest of my life. I will live it on my terms. And you... you can have all of me or nothing. I won't be an invalid any longer. Not even if it means losing you.
Lisa KleypasThe term ignorant is indeed perhaps an overstatement, implying as it does that something is known somewhere, whereas in reality we are not even sure of this: we in fact cannot aver with any degree of certainty that we are ignorant. Yet this is not so bad; we have at any rate kept our open-mindedness -- that, at least, we may be sure that we have -- and are not in any danger, or so it seems, of freezing into the pious attitudes of those true spiritual bigots whose faces are turned toward eternity and who therefore can see nothing.
John AshberyAnd it would be a spare life he would be certain to lead as a schoolteacher in some urban location. But he had a serenity that came with the choice of the life he wanted to live. And this serenity and certainty I have seen only among those who have the armour of books close by.
Michael OndaatjeIn the end it all comes down to this: you have a choice (or more accurately a rolling tangle of choices) between giving your work your best shot and risking that it will not make you happy, or not giving it your best shot - and thereby guaranteeing that it will not make you happy. It becomes a choice between certainty and uncertainty. And curiously, uncertainty is the comforting choice.
David BaylesTo tell you the truth, the older I get, the less I know. I keep meeting people, both older and younger, who seem to have accrued so much more knowledge or expertise or certainty about who they are and the jobs they do. I just marvel at it.
Hugh LaurieThe remarkable thing is that it is the crowded life that is most easily remembered. A life full of turns, achievements, disappointments, surprises, and crises is a life full of landmarks. The empty life has even its few details blurred, and cannot be remembered with certainty.
Eric HofferOne can re-create what was in the mind of a mathematician a thousand years ago, recapture the truth of the intellect wherever it may have once come to light; but the image of art, that infinite variable of perception and expression in the individual, - that is not easily re-created, at least, not with certainty and in its original fulness.
George Edward WoodberryWhat is certainty but the refuge of those whose faith is not strong enough to entertain doubt.
Robert BreaultThere are no means of attaining faith and certainty except through the Qur'an.
Ibn Qayyim Al-JawziyyaI said to him, "Shall I tell you where the men are who believe most in themselves? For I can tell you. I know of men who believe in themselves more colossally than Napoleon or Caesar. I know where flames the fixed star of certainty and success. I can guide you to the thrones of the Super-men. The men who really believe in themselves are all in lunatic asylums.
Gilbert K. ChestertonYou were my hope during my days of loneliness, my anxiety during moments of doubt, my certainty during moments of faith.
Paulo CoelhoCrimes are more effectually prevented by the certainty than the severity of punishment
Cesare BeccariaIdeas which have been developed simultaneously or in immediate succession in the same mind mutually reproduce each other, and do this with greater ease in the direction of the original succession and with a certainty proportional to the frequency with which they were together
Hermann EbbinghausThe problem with certainty is that it is static; it can do little but endlessly reassert itself. Uncertainty, by contrast, is full of unknowns, possibilities, and risks.
Stephen BatchelorOkay. I'll deal with Benjamin. You're safe, okay? Nothing's gonna happen." His mouth pulled tight against itself. And now I was having some sort of heart attack. Because when he looked at me like that, my chest started to feel like it was turned inside out. "Promise." And thatโthe promise, the way he said it with utter certaintyโwas enough to make me tear up again.
Lilith SaintcrowSee that unfortunate soldier who is falling hurt to death ("tombe blessรฉ ร ...", Fr.) on the battlefield; he learns that his folks have vanquished and dies happy. He detached himself from himself (s'est dรฉtacher de lui-mรชme", Fr.), has identified himself with something greater and more lasting than himself; his homeland ("patrie", Fr.); thus, while dying as an individual, he has the certainty to survive in a larger existence.
African Spir