We have the right not to tolerate the intolerant. We should tolerate even them whenever we can do so without running a… — Karl Popper Copy Share Image
Every intellectual has a very special responsibility. He has the privilege and the opportunity of studying. In return, he owes it to… — Karl Popper Copy Share Image
Philosophers should consider the fact that the greatest happiness principle can easily be made an excuse for a benevolent dictatorship. We should… — Karl Popper Copy Share Image
Some scientists find, or so it seems, that they get their best ideas when smoking; others by drinking coffee or whisky. Thus… — Karl Popper Copy Share Image
The use of violence is justified only under a tyranny which makes reforms without violence impossible, and should have only one aim,… — Karl Popper Copy Share Image
Serious rational criticism is so rare that it should be encouraged. Being too ready to defend oneself is more dangerous than being… — Karl Popper Copy Share Image
I don't know whether God exists or not. ... Some forms of atheism are arrogant and ignorant and should be rejected, but… — Karl Popper Copy Share Image
We should therefore claim, in the name of tolerance, the right not to tolerate the intolerant. — Karl Popper Copy Share Image
The fundamental thing about human languages is that they can and should be used to describe something; and this something is, somehow,… — Karl Popper Copy Share Image
I think that there is only one way to science - or to philosophy, for that matter: to meet a problem, to… — Karl Popper Copy Share Image
Unlimited tolerance must lead to the disappearance of tolerance. If we extend unlimited tolerance even to those who are intolerant, if we… — Karl Popper Copy Share Image
Science is the century-old endeavour to bring together by means of systematic thought the perceptible phenomena of this world into as thorough-going… — Karl Popper Copy Share Image
We do not know anything - this is the first. Therefore, we should be very modest - this is the second. Not… — Karl Popper Copy Share Image
It is easy to obtain confirmations, or verifications, for nearly every theory-if we look for confirmations. Confirmations should count only if they… — Karl Popper Copy Share Image
I do not overlook the fact that there are irrationalists who love mankind, and that not all forms of irrationalism engender criminality.… — Karl Popper Copy Share Image
The moral decisions of others should be treated with respect, as long as such decisions do not conflict with the principle of… — Karl Popper Copy Share Image
Science is not a system of certain, or -established, statements; nor is it a system which steadily advances towards a state of finality... And… — Karl Popper Copy Share Image
“As indicated by our example, methodological nominalism is nowadays fairly generally accepted in the natural sciences. The problems of the social sciences, on the… — Karl Popper Copy Share Image
Science is perhaps the only human activity in which errors are systematically criticized and, in time, corrected. — Karl Popper Copy Share Image
A system is empirical or scientific only if it is capable of being tested by experience. These considerations suggest that not the verifiability but… — Karl Popper Copy Share Image
Bold ideas, unjustified anticipations, and speculative thought, are our only means for interpreting nature: our only organon, our only instrument, for grasping her. And… — Karl Popper Copy Share Image
[The aim of science is] to explain what so far has taken to be an explicans, such as a law of nature. The task… — Karl Popper Copy Share Image
There can be no ultimate statements science: there can be no statements in science which can not be tested, and therefore none which cannot… — Karl Popper Copy Share Image
Evolution is not a fact. Evolution doesn't even qualify as a theory or as a hypothesis. It is a metaphysical research program, and it… — Karl Popper Copy Share Image
I am opposed to looking upon logic as a kind of game. ... One might think that it is a matter of choice or… — Karl Popper Copy Share Image
The history of science, like the history of all human ideas, is a history of irresponsible dreams, of obstinacy, and of error. — Karl Popper Copy Share Image
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