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There can be no ultimate statements science: there can be no statements in science which can not be tested, and therefore none which cannot in principle be refuted, by falsifying some of the conclusions which can be deduced from them.

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
Principle
None
Falsifying
Ultimate
Deduced
Therefore
Refuted
Principles
Conclusions
Science
Tested
Cannot
Statements
Conclusion

More quotes by Karl Popper

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Ignorance is not a simple lack of knowledge but an active aversion to knowledge, the refusal to know, issuing from cowardice, pride, or laziness of mind.
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But some of these theories are so bold that they can clash with reality: they are the testable theories of science. And when they clash, then we know that there is a reality something that can inform us that our ideas are mistaken.
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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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Now this principle of induction cannot be a purely logical truth like a tautology or an analytic statement. . . .
Karl Popper
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Criticism of my alleged views was widespread and highly successful. I have yet to meet a criticism of my views.
Karl Popper
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Those who promise us paradise on earth never produced anything but a hell.
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While differing widely in the various little bits we know, in our infinite ignorance we are all equal.
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I have insisted that we must be tolerant. But I also believe that this tolerance has its limits. We must not trust those anti-humanitarian religions which not only preach destruction but act accordingly. For if we tolerate them, then we become ourselves responsible for for their deeds.
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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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The influence (for good or ill) of Plato's work is immeasurable. Western thought, one might say, has been Platonic or anti-Platonic, but hardly ever non-Platonic.
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No particular theory may ever be regarded as absolutely certain.... No scientific theory is sacrosanct.
Karl Popper
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The use of violence is justified only under a tyranny which makes reforms without violence impossible, and should have only one aim, that is, to bring about a state of affairs which makes reforms without violence possible.
Karl Popper
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Simple statements are to be prized more highly than less simple ones because they tell us more because their empirical content is greater and because they are better testable.
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Reason like science, grows by way of mutual criticism the only possible way of planning its growth is to develop those institutions that safeguard. the freedom of thought
Karl Popper
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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.
Karl Popper
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The conspiracy theory of society... comes from abandoning god and then asking: Who is in his place
Karl Popper
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The attempt to make heaven on earth invariably produces hell.
Karl Popper
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A theory is just a mathematical model to describe the observations.
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The open society is one in which men have learned to be to some extent critical of taboos, and to base decisions on the authority of their own intelligence.
Karl Popper