“The way of science is paved with discarded theories which were once declared self-evident;” — Karl R. Popper Copy Share Image
“A people ought to fight for the laws of the city as if they were its walls.” — Karl R. Popper City walls Copy Share Image
“Most of us, it seems, have a strong inclination to accept the peculiarities of our social environment as if they were ‘natural’.” — Karl R. Popper Environment Copy Share Image
“I wish to make it clear that ‘history’ in the sense in which most people speak of it simply does not exist;… — Karl R. Popper History Copy Share Image
“It is not the consciousness of man that determines his existence—rather, it is his social existence that determines his consciousness.” — Karl R. Popper Consciousness Copy Share Image
“And it implies that if we respect truth, we must search for it by persistently searching for our errors: by indefatigable rational… — Karl R. Popper Self criticism Copy Share Image
“Relativism is one of the many crimes committed by intellectuals. It is a betrayal of reason and of humanity.” — Karl R. Popper Intellectuals Copy Share Image
“Scientific’ Marxism is dead. Its feeling of social responsibility and its love for freedom must survive.” — Karl R. Popper Freedom Copy Share Image
“It has been indicated above that because of its self-sufficiency, the ideal state appears to Plato as the perfect individual, and the… — Karl R. Popper Copy Share Image
“What a monument of human smallness is this idea of the philosopher king. What a contrast between it and the simplicity of… — Karl R. Popper Nature of man Copy Share Image
“When the Marxists say, as they sometimes do, that Marx has proved the uselessness of a counter cycle policy and of similar… — Karl R. Popper Marxists Copy Share Image
“Instead of the greatest happiness for the greatest number, one should demand, more modestly, the least amount of avoidable suffering for all;… — Karl R. Popper Happiness Copy Share Image
“The prolonged use of violence may lead in the end to the loss of freedom, since it is liable to bring about… — Karl R. Popper Freedom Copy Share Image
“There is no law of progress, and everything will depend on ourselves. But the actual situation is briefly and fairly summed up… — Karl R. Popper Capitalism Copy Share Image
“Democracy and freedom do not guarantee the millennium. No, we do not choose political freedom because it promises us this or that.… — Karl R. Popper Democracy Copy Share Image
“It is our duty to help those who need our help; but it cannot be our duty to make others happy, since… — Karl R. Popper Cybersecurity Copy Share Image
“There is only one further use of violence in political quarrels which I should consider justified. I mean the resistance, once democracy… — Karl R. Popper Democracy Copy Share Image
“We all remember how many religious wars were fought for a religion of love and gentleness; how many bodies were burned alive… — Karl R. Popper Acts of violence Copy Share Image
“in contrast to the Hegelians of the right-wing, Marx made an honest attempt to apply rational methods to the most urgent problems… — Karl R. Popper Life Copy Share Image
“One cannot do justice to Marx without recognizing his sincerity. His open-mindedness, his sense of facts, his distrust of verbiage, and especially… — Karl R. Popper Burning desire Copy Share Image
“(a) Nationalism, in the form of the historicist idea that the state is the incarnation of the Spirit (or now, of the… — Karl R. Popper Great man Copy Share Image
“Plato summarizes his reply to equalitarianism in the formula: ‘Equal treatment of unequals must beget inequity’20; and this was developed by Aristotle… — Karl R. Popper Equal treatment Copy Share Image
“The principle of the national state, that is to say, the political demand that the territory of every state should coincide with… — Karl R. Popper Politics Copy Share Image
“What I criticize under the name Utopian engineering recommends the reconstruction of society as a whole, i.e. very sweeping changes whose practical… — Karl R. Popper Utopia Copy Share Image
“The theory I have in mind is one which does not proceed, as it were, from a doctrine of the intrinsic goodness… — Karl R. Popper Democracy Copy Share Image
“the alleged clash between freedom and security, that is, a security guaranteed by the state, turns out to be a chimera. For… — Karl R. Popper Cybersecurity Copy Share Image
“The derivation of the historical law of increasing misery is thus invalid. All that remains is a moving description of the misery… — Karl R. Popper History Copy Share Image
“The belief that science proceeds from observation to theory is still so widely and so firmly held that my denial of it… — Karl R. Popper Faith Copy Share Image
“Society and the individual are thus interdependent. The one owes its existence to the other. Society owes its existence to human nature,… — Karl R. Popper Community Copy Share Image
“But the secret of intellectual excellence is the spirit of criticism ; it is intellectual independence. And this leads to difficulties which… — Karl R. Popper Authoritarianism Copy Share Image
“The empirical basis of objective science has thus nothing ‘absolute’ about it.4 Science does not rest upon solid bedrock. The bold structure… — Karl R. Popper Copy Share Image
“However this may be, it can hardly be doubted that with Justinian’s persecution of non-Christians, heretics, and philosophers (A.D. 529), the dark… — Karl R. Popper Dark ages Copy Share Image
“One particular form of this logical argument is directed against a too naïve version of liberalism, of democracy, and of the principle… — Karl R. Popper Absolute freedom Copy Share Image
“What we should do, I suggest, is to give up the idea of ultimate sources of knowledge, and admit that all knowledge… — Karl R. Popper Dreams Copy Share Image
“First, it must be admitted that certain forms of behaviour may be described as more ‘natural’ than other forms; for instance, going… — Karl R. Popper Habits Copy Share Image
“The fascist appeal to ‘human nature’ is to our passions, to our collectivist mystical needs, to ‘man the unknown’. Adopting Hegel’s words… — Karl R. Popper Hegel 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 R. Popper Democracy Copy Share Image
“Historically, all ethics undoubtedly begin with religion; but I do not now deal with historical questions. I do not ask who was… — Karl R. Popper Christian ethics Copy Share Image
“ But are there philosophical problems? The present position of English philosophy - my point of departure - originates, I believe, in… — Karl R. Popper Philosophy Copy Share Image
