It is not his possession of knowledge, of irrefutable truth, that makes the man of science, but his persistent and recklessly critical… — 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
The metaphysical doctrine of determinism simply asserts that all events in this world are fixed, or unalterable, or predetermined. It does not… — Karl Popper Copy Share Image
The more we learn about the world, and the deeper our learning, the more conscious, specific, and articulate will be our knowledge… — Karl Popper Copy Share Image
But some of these theories are so bold that they can clash with reality: they are the testable theories of science. And… — Karl Popper Copy Share Image
When we enter a new situation in life and are confronted by a new person, we bring with us the prejudices of… — Karl Popper Copy Share Image
We know a great deal, but our ignorance is sobering and boundless. With each step forward, with each problem which we solve,… — 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
Understanding a theory has, indeed, much in common with understanding a human personality. We may know or understand a man's system of… — Karl Popper Copy Share Image
Ignorance is not a simple lack of knowledge but an active aversion to knowledge, the refusal to know, issuing from cowardice, pride,… — 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
I think that we shall have to get accustomed to the idea that we must not look upon science as a 'body… — Karl Popper Copy Share Image
If you know that things are bound to happen whatever you do, then you may feel free to give up the fight… — 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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