Our belief in any particular natural law cannot have a safer basis than our unsuccessful critical attempts to refute it. — Karl Popper Copy Share Image
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 open society is one in which men have learned to be to some extent critical of taboos, and to base decisions… — Karl Popper Copy Share Image
Thus science must begin with myths, and with the criticism of myths; neither with the collection of observations, nor with the invention… — Karl Popper Copy Share Image
The scientific tradition is distinguished from the pre-scientific tradition by having two layers. Like the latter, it passes on its theories; but… — Karl Popper Copy Share Image
The genuine rationalist does not think that he or anyone else is in possession of the truth; nor does he think that… — 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
[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
Philosophy is a necessary activity because we, all of us, take a great number of things for granted, and many of these… — 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)
