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"Good tests kill flawed theories; we remain alive to guess again."
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"If you only read the books that everyone else is reading, you can only think what everyone else is thinking."

"It is of interest to note that while some dolphins are reported to have learned English - up to fifty words used in correct context - no human being has been reported to have learned dolphinese."

"If we let ourselves, we shall always be waiting for some distraction or other to end before we can really get down to our work. The only people who achieve much are those who want knowledge so badly that they seek it while the conditions are still unfavorable. Favorable conditions never come."

"The greatest achievements of the human mind are generally received with distrust."

"I who know many present things by my art," replied the Hermit with a smile, "have yet little knowledge of things future. Therefore I do not know whether any man or woman or beast in the whole world will be alive when the sun sets tonight. But be of good hope. The damsel is likely to live as long as any her age."

"Have books 'happened' to you? Unless your answer to that question is 'yes,' I'm unsure how to talk to you."

"Knowing more than someone does not necessarily mean that you know every single thing they know."
Explore more quotes by Karl Popper

"No rational argument will have a rational effect on a man who does not want to adopt a rational attitude."

"There is no history of mankind, there are only many histories of all kinds of aspects of human life. And one of these is the history of political power. This is elevated into the history of the world."

"We must plan for freedom, and not only for security, if for no other reason than that only freedom can make security secure."

"Piecemeal social engineering resembles physical engineering in regarding the ends as beyond the province of technology."

"Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve."
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