“True ignorance is not the absence of knowledge, but the refusal to acquire it.”

—  Karl Popper

As quoted by Mark Damazer in "In Our Time's Greatest Philosopher Vote" at In Our Time (BBC 4) http://www.bbc.co.uk/radio4/history/inourtime/greatest_philosopher_celeb.shtml

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Karl Popper 82
Austrian-British philosopher of science 1902–1994

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Source: Guide for the Perplexed (c. 1190), Part III, Ch.23
Context: The words of God are justified, as I will show, by the fact that Job abandoned his first very erroneous opinion, and himself proved that it was an error. It is the opinion which suggests itself as plausible at first thought, especially in the minds of those who meet with mishap, well knowing that they have not merited them through sins. This is admitted by all, and therefore this opinion was assigned to Job. But he is represented to hold this view only so long as he was without wisdom, and knew God only by tradition, in the same manner as religious people generally know Him. As soon as he had acquired a true knowledge of God, he confessed that there is undoubtedly true felicity in the knowledge of God; it is attained by all who acquire that knowledge, and no earthly trouble can disturb it. So long as Job's knowledge of God was based on tradition and communication, and not on research, he believed that such imaginary good as is possessed in health, riches, and children, was the utmost that men can attain; this was the reason why he was in perplexity, and why he uttered the... opinions, and this is also the meaning of his words: "I have heard of thee by the hearing of the ear; but now mine eye seeth thee. Wherefore I abhor myself, and repent because of dust and ashes" (xlii. 5, 6); that is to say, he abhorred all that he had desired before, and that he was sorry that he had been in dust and ashes; comp. "and he sat down among the ashes" (ii. 8) On account of this last utterance, which implies true perception, it is said afterwards in reference to him, "for you have not spoken of me the thing that is right, as my servant Job hath."

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“Ignorance is not a simple lack of knowledge but an active aversion to knowledge, the refusal to know, issuing from cowardice, pride or laziness of mind.”

Karl Popper (1902–1994) Austrian-British philosopher of science

Principle attributed to Popper by Ryszard Kapiscinski in New York Times obituary, 1995.
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Source: https://www.nytimes.com/1995/01/01/magazine/lives-well-lived-karl-popper-the-philosopher-as-giantslayer.html

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“True friendship can afford true knowledge. It does not depend on darkness and ignorance.”

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“Knowledge leads to unity, but Ignorance to diversity.
So long as God seems to be outside and far away, there is ignorance. But when God is realised within, that is true knowledge.”

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As quoted in Hindu Psychology : Its Meaning for the West (1946) by Swami Akhilananda, p. 204

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“A true scientist is bored by knowledge; it is the assault on ignorance that motivates him - the mysteries that previous discoveries have revealed.”

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“A popular Government without popular information, or the means of acquiring it, is but a Prologue to a Farce or a Tragedy, or perhaps both. Knowledge will forever govern ignorance: And a people who mean to be their own Governors, must arm themselves with the power which knowledge gives.”

James Madison (1751–1836) 4th president of the United States (1809 to 1817)

Letter to W.T. Barry http://press-pubs.uchicago.edu/founders/documents/v1ch18s35.html (4 August 1822), in The Writings of James Madison (1910) edited by Gaillard Hunt, Vol. 9, p. 103; these words, using the older spelling "Governours", are inscribed to the left of the main entrance, Library of Congress James Madison Memorial Building.
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“He fell to condemning intelligence and to hating curiosity. He himself refused to learn anything more, for fear that in acquiring fresh knowledge he might let it be seen that he had not known everything at the very outset.”

Source: The Revolt of the Angels (1914), Ch. XXXV
Context: Satan found pleasure in praise and in the exercise of his grace; he loved to hear his wisdom and his power belauded. He listened with joy to the canticles of the cherubim who celebrated his good deeds, and he took no pleasure in listening to Nectaire's flute, because it celebrated nature's self, yielded to the insect and to the blade of grass their share of power and love, and counselled happiness and freedom. Satan, whose flesh had crept, in days gone by, at the idea that suffering prevailed in the world, now felt himself inaccessible to pity. He regarded suffering and death as the happy results of omnipotence and sovereign kindness. And the savour of the blood of victims rose upward towards him like sweet incense. He fell to condemning intelligence and to hating curiosity. He himself refused to learn anything more, for fear that in acquiring fresh knowledge he might let it be seen that he had not known everything at the very outset. He took pleasure in mystery, and believing that he would seem less great by being understood, he affected to be unintelligible. Dense fumes of Theology filled his brain. One day, following the example of his predecessor, he conceived the notion of proclaiming himself one god in three persons. Seeing Arcade smile as this proclamation was made, he drove him from his presence. Istar and Zita had long since returned to earth. Thus centuries passed like seconds. Now, one day, from the altitude of his throne, he plunged his gaze into the depths of the pit and saw Ialdabaoth in the Gehenna where he himself had long lain enchained. Amid the ever lasting gloom Ialdabaoth still retained his lofty mien. Blackened and shattered, terrible and sublime, he glanced upwards at the palace of the King of Heaven with a look of proud disdain, then turned away his head. And the new god, as he looked upon his foe, beheld the light of intelligence and love pass across his sorrow-stricken countenance. And lo! Ialdabaoth was now contemplating the Earth and, seeing it sunk in wickedness and suffering, he began to foster thoughts of kindliness in his heart. On a sudden he rose up, and beating the ether with his mighty arms, as though with oars, he hastened thither to instruct and to console mankind. Already his vast shadow shed upon the unhappy planet a shade soft as a night of love.
And Satan awoke bathed in an icy sweat.
Nectaire, Istar, Arcade, and Zita were standing round him. The finches were singing.
"Comrades," said the great archangel, "no — we will not conquer the heavens. Enough to have the power. War engenders war, and victory defeat.
"God, conquered, will become Satan; Satan, conquering, will become God. May the fates spare me this terrible lot; I love the Hell which formed my genius. I love the Earth where I have done some good, if it be possible to do any good in this fearful world where beings live but by rapine.
Now, thanks to us, the god of old is dispossessed of his terrestrial empire, and every thinking being on this globe disdains him or knows him not. But what matter that men should be no longer submissive to Ialdabaoth if the spirit of Ialdabaoth is still in them; if they, like him, are jealous, violent, quarrelsome, and greedy, and the foes of the arts and of beauty? What matter that they have rejected the ferocious Demiurge, if they do not hearken to the friendly demons who teach all truths; to Dionysus, Apollo, and the Muses? As to ourselves, celestial spirits, sublime demons, we have destroyed Ialdabaoth, our Tyrant, if in ourselves we have destroyed Ignorance and Fear."
And Satan, turning to the gardener, said:
"Nectaire, you fought with me before the birth of the world. We were conquered because we failed to understand that Victory is a Spirit, and that it is in ourselves and in ourselves alone that we must attack and destroy Ialdabaoth."

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