Our knowledge can only be finite, while our ignorance must necessarily be infinite.
Interpretation
We will always know less than what we donβt know, which implies that our ignorance is limitless compared to our knowledge.
This quote by Karl Popper highlights the inherent limitation of human knowledge, suggesting that what we understand is merely a fraction of what exists beyond our comprehension. The emphasis on the infinite nature of ignorance serves as a reminder of the vastness of the unknown and the continuous pursuit of knowledge throughout our lives.
In practice
In a speech about the importance of lifelong learning, you can reference Popper's quote to emphasize that knowledge is a continuous journey.
The growth of our knowledge is the result of a process closely resembling what Darwin called 'natural selection'; that is, the natural selection of hypotheses: our knowledge consists, at every moment, of those hypotheses which have shown their (comparative) fitness by surviving so far in their struggle for existence, a competitive struggle which eliminates those hypotheses which are unfit.
If you can't say it simply and clearly, keep quiet, and keep working on it till you can.
No particular theory may ever be regarded as absolutely certain.... No scientific theory is sacrosanct.
The belief in a political Utopia is especially dangerous. This is possibly connected with the fact that the search for a better world, like the investigation of our environment, is (if I am correct) one of the oldest and most important of all the instincts.
A rationalist is simply someone for whom it is more important to learn than to be proved right; someone who is willing to learn from others - not by simply taking over another's opinions, but by gladly allowing others to criticize his ideas and by gladly criticizing the ideas of others
Thus science must begin with myths, and with the criticism of myths; neither with the collection of observations, nor with the invention of experiments, but with the critical discussion of myths, and of magical techniques and practices.
Nationalism of one kind or another was the cause of most of the genocide of the twentieth century. Flags are bits of colored cloth that governments use first to shrink-wrap people's minds and then as ceremonial shrouds to bury the dead.
War does horrible things to human beings, to societies. It brings out the best, but most often the worst, in our human nature.
I have a kind of magnetic attraction to situations of violence.
I am so afraid of people's words.They describe so distinctly everything: And this they call dog and that they call house, here the start and there the end. I worry about their mockery with words, they know everything, what will be, what was; no mountain is still miraculous; and their house and yard lead right up to God. I want to warn and object: Let the things be! I enjoy listening to the sound they are making. But you always touch: and they hush and stand still. That's how you kill.
Mass communication, radio, and especially television, have attempted, not without success, to annihilate every possibility of solitude and reflection.
He was a worshiper of liberty, a friend of the oppressed. A thousand times I have heard him quote these words: 'For Justice all place a temple, and all season, summer.' He believed that happiness is the only good, reason the only torch, justice the only worship, humanity the only religion, and love the only priest. He added to the sum of human joy; and were every one to whom he did some loving service to bring a blossom to his grave, he would sleep tonight beneath a wilderness of flowers. . . .
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