Men and governments must act to the best of their ability. There is no such thing as absolute certainty but there is assurance sufficient for the purposes of human life.
There are two modes of knowledge: through argument and through experience. Argument brings conclusions and compels us to concede them, but it does not cause certainty nor remove doubts that the mind may rest in truth, unless this is provided by experience.
The first indication that we are killing our dreams is lack of time. The second indication of the death of our dreams is certainty. The third indication that our dreams are dead is peace.
Certainty ends inquiry.
My only complaint with 'Dickie' Bird is that he requires a degree of certainty that is almost neurotic; like the man who has to keep going to the front door to make certain that he's locked it.
Of what use, however, is a general certainty that an insect will not walk with his head hindmost, when what you need to know is the play of inward stimulus that sends him hither and thither in a network of possible paths?
A great man, who was convinced that the truths of political and moral science are capable of the same certainty as those that form the system of physical science, even in those branches like astronomy that seem to approximate mathematical certainty. He cherished this belief, for it led to the consoling hope that humanity would inevitably make progress toward a state of happiness and improved character even as it has already done in its knowledge of the truth.
Gauss replied, when asked how soon he expected to reach certain mathematical conclusions, that he had them long ago, all he was worrying about was how to reach them!
I remember one occasion when I tried to add a little seasoning to a review, but I wasn't allowed to. The paper was by Dorothy Maharam, and it was a perfectly sound contribution to abstract measure theory. The domains of the underlying measures were not sets but elements of more general Boolean algebras, and their range consisted not of positive numbers but of certain abstract equivalence classes. My proposed first sentence was: "The author discusses valueless measures in pointless spaces."
Those who condemn the supreme certainty of mathematics feed on confusion, and can never silence the contradictions of the sophistical sciences which lead to eternal quackery.
Living by faith isn't living with certainty. It's trusting God in spite of unanswered questions and unresolved doubts.
Time...give us enough time and our best-supported decisions will seem wobbly, our certainties whimsical.
The only things of certainty are Death and Taxes.
I remembered standing in the middle of the street in front of The Crooked Bookshelf, filled with the certainty of a future. I had heard the wolves howling behind the house and remembered how glad I had been to be human.
Speculations? I have none. I am resting on certainties.
We've created a multitrillion-dollar edifice for dispensing the medical equivalent of lottery tickets - and have only the rudiments of a system to prepare patients for the near certainty that those tickets will not win. Hope is not a plan, but hope is our plan.
A vital part of philosophizing is learning to trust one's own intuitivist intelligence, getting one's center of gravity back between one's feet. In our culture-so outer-directed, "objective" or extraverted-this is already heresy. This is self-mastering thinking, centered in what has been well-tested as certainties: autarkia or self-rule.
If you're invested in security and certainty, you are on the wrong planet.
Certainty and similar states of ‘knowing what we know’ arise out of involuntary brain mechanisms that, like love or anger, function independently of reason.
The world is certainty a sudden place.
The image of the presence, whatever it was, waiting there for him to go -this image had not yet been so concrete for his nerves as when he stopped short of the point at which certainty would have come to him. For, with all his resolution, or more exactly with all his dread, he did stop short - he hung back from really seeing. The risk was too great and his fear too definite: it took at this moment an awful specific form.
Joy adapts and changes, but it always endures, even as a flicker of light born of our personal certainty that, when everything is said and done, we are infinitely loved.
There is no certainty of what will or won't be in our lives. All we have is this moment. The last is gone, the next isn't here yet.
The Western World has been brainwashed by Aristotle for the last 2,500 years. The unconscious, not quite articulate, belief of most Occidentals is that there is one map which adequately represents reality. By sheer good luck, every Occidental thinks he or she has the map that fits. Guerrilla ontology, to me, involves shaking up that certainty.
Action based on hope just felt better than the paralysis of certainty.
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