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.
What's wrong with men?" Tenar inquired cautiously. As cautiously, lowering her voice, Moss replied, "I don't know, my dearie. I've thought on it. Often I've thought on it. The best I can say it is like this. A man's in his skin, see, like a nut in its shell." She held up her long, bent, wet fingers as if holding a walnut. "It's hard and strong, that shell, and it's all full of him. Full of grand man-meat, man-self. And that's all. That's all there is. It's all him and nothing else, inside.
'I am' is nothing but another name for the ego. Now you will be getting into trouble. If the ego is convinced that the only way is to drop the ego, then who is going to drop whom? And how? It will be like pulling yourself up by your own shoestrings. You will look just silly. Watch each word that you use. 'I am' is nothing but the ego.
I used to love to untangle chains when I was a child. I had thin, busy fingers, and I never gave up. Perhaps there was a psychiatric component to my concentration but like much of my psychic damage, this worked to everyone's advantage.
With which stars do they go on speaking,the rivers that never reach the sea?
I cannot affirm God if I fail to affirm man. Therefore, I affirm both. Without a belief in human unity I am hungry and incomplete. Human unity is the fulfillment of diversity. It is the harmony of opposites. It is a many-stranded texture, with color and depth.
Mystics understand the roots of the Tao but not its branches; scientists understand its branches but not its roots. Science does not need mysticism and mysticism does not need science; but man needs both.
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