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 initial stage, the act of conceiving or inventing a theory, seems to me neither to call for logical analysis nor to… — 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… — 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
Is the world ruled by strict laws or not? This question I regard as metaphysical. The laws we find are always hypotheses;… — 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
Science is not a system of certain, or -established, statements; nor is it a system which steadily advances towards a state of… — Karl Popper Copy Share Image
Almost everyone... seems to be quite sure that the differences between the methodologies of history and of the natural sciences are vast.… — Karl Popper Copy Share Image
[Great scientists] are men of bold ideas, but highly critical of their own ideas: they try to find whether their ideas are… — Karl Popper Copy Share Image
A system such as classical mechanics may be 'scientific' to any degree you like; but those who uphold it dogmatically - believing,… — 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
A system is empirical or scientific only if it is capable of being tested by experience. These considerations suggest that not the… — Karl Popper Copy Share Image
It is clear that everybody interested in science must be interested in world 3 objects. A physical scientist, to start with, may… — 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… — Karl Popper Copy Share Image
Science does not rest upon solid bedrock. The bold structure of its theories rises, as it were, above a swamp. It is… — Karl Popper Copy Share Image
Psychologism is, I believe, correct only in so far as it insists upon what may be called 'methodological individualism' as opposed to… — Karl Popper Copy Share Image
My thesis is that what we call 'science' is differentiated from the older myths not by being something distinct from a myth,… — 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,… — Karl Popper Copy Share Image
The method of science depends on our attempts to describe the world with simple theories: theories that are complex may become untestable,… — 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
“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
Science is perhaps the only human activity in which errors are systematically criticized and, in time, corrected. — Karl Popper Copy Share
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
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
[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
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
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
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
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
We have the right not to tolerate the intolerant. We should tolerate even them whenever we can do so without running a great risk;… — Karl Popper Copy Share
“Every time we proceed to explain some conjectural law or theory by a new conjectural theory of a higher degree of universality, we are… — Karl Popper Copy Share
![“[Great scientists] are men of bold ideas, but highly critical of their own ideas: they try to find whether their ideas are right by trying first to find whether they are not perhaps wrong. They work with bold conjectures and severe attempts at refuting their own conjectures.” quote by Karl Popper](https://sms4smile.com/quotes/i/eb7/karl-popper-2167_conjecture_great-scientists-are-men-of-bold-ideas-b_1147559.jpg)
