Isn't it the moment of most profound doubt that gives birth to new certainties? Perhaps hopelessness is the very soil that nourishes human hope; perhaps one could never find sense in life without first experiencing its absurdity.
Experiment is the sole source of truth. It alone can teach us something new; it alone can give us certainty.
The reason that ego and love are not compatible comes down to this: you cannot take your ego into the unknown, where love wants to lead. If you follow love, your life will become uncertain, and the ego craves certainty.
People, chained by monotony, afraid to think, clinging to certainties... they live like ants.
Error is certainty's constant companion. Error is the corollary of evidence. And anything said about truth may equally well be said about error: the delusion will be no greater.
I am not accustomed to saying anything with certainty after only one or two observations.
Just as the spectroscope opened up a new astronomy by enabling the astronomer to determine some of the constituents of which distant stars are composed, so the seismograph, recording the unfelt motion of distant earthquakes, enables us to see into the earth and determine its nature with as great a certainty, up to a certain point, as if we could drive a tunnel through it and take samples of the matter passed through.
Facts are certainly the solid and true foundation of all sectors of nature study ... Reasoning must never find itself contradicting definite facts; but reasoning must allow us to distinguish, among facts that have been reported, those that we can fully believe, those that are questionable, and those that are false. It will not allow us to lend faith to those that are directly contrary to others whose certainty is known to us; it will not allow us to accept as true those that fly in the face of unquestionable principles.
While the individual man is an insoluble puzzle, in the aggregate he becomes a mathematical certainty. You can, for example, never foretell what any one man will be up to, but you can say with precision what an average number will be up to. Individuals vary, but percentages remain constant. So says the statistician.
I believe any decline would lock in a Fed increase with some certainty.
I found it peculiar that those who wanted to take military action could - with 100 per cent certainty - know that the weapons existed and turn out to have zero knowledge of where they were.
We see it [the as-yet unseen, probable new planet, Neptune] as Columbus saw America from the coast of Spain. Its movements have been felt, trembling along the far-reaching line of our analysis with a certainty hardly inferior to that of ocular demonstration.
If it were possible for us to have so deep an insight into a man's character as shown both in inner and in outer actions, that every, even the least, incentive to these actions and all external occasions which affect them were so known to us that his future conduct could be predicted with as great a certainty as the occurrence of a solar or lunar eclipse, we could nevertheless still assert that the man is free.
A chuck under the chin is worth two kisses.
What makes friendship indissolute and what doubles its charms is a feeling we find lacking in love: I mean certitude.
Fools and fanatics are always so certain of themselves.
Certainty without power can be interesting, even amusing. Certainty with power can be dangerous.
The present is the only reality and the only certainty.
The more I see the less I know for sure.
If we insist on being as sure as is conceivable... we must be content to creep along the ground, and never soar.
The neurotic has problems; the psychotic has solutions.
The more I see, the less I know.
You had to form for yourself a lucid language for the world, to overcome the battering of experience, to replace everyday life's pain and harshness and wretched dreariness with - no not with certainty but with an ignorance you could live with. Deep ignorance, but still a kind that knew its limits. The limits were crucial.
Organisms [...] are directed and limited by their past. They must remain imperfect in their form and function, and to that extent unpredictable since they are not optimal machines. We cannot know their future with certainty, if only because a myriad of quirky functional shifts lie within the capacity of any feature, however well adapted to a present role.
I have lived in this world just long enough to look carefully the second time into things that I am most certain of the first time.
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