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But it is certainly not possible to insist on one hand that the formalism is complete and to insist on the other hand that its application to 'the actual' actually demands a step which cannot be derived from it.

Karl Popper

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Karl Popper
Age: 92 †
Born: 1902
Born: July 28
Died: 1994
Died: September 17
Philosopher
Philosopher Of Science
Sociologist
University Teacher
Writer
Vienna
Austria
Karl Raimund Popper Sir
Karl Raimund
Sir Popper
Sir Karl Raimund Popper
Actually
Actual
Science
Complete
Hands
Demand
Formalism
Cannot
Step
Derived
Certainly
Mechanic
Steps
Insist
Hand
Application
Possible
Demands

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There is no history, only histories.
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Unlimited tolerance must lead to the disappearance of tolerance. If we extend unlimited tolerance even to those who are intolerant, if we are not prepared to defend a tolerant society, then the tolerant will be destroyed, and tolerance with them. We should therefore claim, in the name of tolerance, the right not to tolerate the intolerant.
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I have spoken to Einstein and he admitted to me that his theory was in fact no different from the one of Parmenides.
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The war of ideas is a Greek invention. It is one of the most important inventions ever made. Indeed, the possibility of fighting with with words and ideas instead of fighting with swords is the very basis of our civilization, and especially of all its legal and parliamentary institutions.
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With regards to political enemies Plato had a kill-and-banish principle. ... In interpreting it , modern-day Platonists are clearly disturbed by it, even as they make elaborate attempts to defend Plato.
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The fundamental thing about human languages is that they can and should be used to describe something and this something is, somehow, the world. To be constantly and almost exclusively interested in the medium - in spectacle-cleaning - is a result of a philosophical mistake.
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The best thing that can happen to a human being us to find a problem, to fall in love with that problem, and to live trying to solve that problem, unless another problem even more lovable appears.
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Whenever we propose a solution to a problem, we ought to try as hard as we can to overthrow our solution, rather than defend it.
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No particular theory may ever be regarded as absolutely certain.... No scientific theory is sacrosanct.
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The history of science is everywhere speculative. It is a marvelous hiatory. It makes you proud to be a human being.
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What really makes science grow is new ideas, including false ideas.
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The game of science is, in principle, without end. He who decides one day that scientific statements do not call for any further test, and that they can be regarded as finally verified, retires from the game.
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The old scientific ideal of episteme - of absolutely certain, demonstrable knowledge - has proved to be an idol. The demand for scientific objectivity makes it inevitable that every scientific statement must remain tentative for ever.
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It is part of my thesis that all our knowledge grows only through the correcting of our mistakes.
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Those who promise us paradise on earth never produced anything but a hell.
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I see now more clearly than ever before that even our greatest troubles spring from something that is [as] admirable and sound as it is dangerous – from our impatience to better the lot of our fellows.
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The attempt to make heaven on earth invariably produces hell.
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We never know what we are talking about.
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The defence of democracy must consist in making anti-democratic experiences too costly for those who try them much more costly than a democratic compromise
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In my view, aiming at simplicity and lucidity is a moral duty of all intellectuals: lack of clarity is a sin, and pretentiousness is a crime.
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