“Observation is the ultimate and final judge of the truth of an idea.”
Richard Feynman (verified)
The meaning of it all (Primary source)
Three provocative 1963 lectures exploring science’s relationship to religion, politics, and society, wherein Feynman champions skepticism and intellectual honesty as essential virtues beyond the laboratory, published posthumously in 1998.
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“The third aspect of my subject is that of science as a method of finding things out. This method is based on the principle that observation is the judge of whether something is so or not. All other aspects and characteristics of science can be understood directly when we understand that observation is the ultimate and final judge of the truth of an idea.”
Richard Feynman (verified)
“For a successful technology, reality must take precedence over public relations, for nature cannot be fooled.”
— Richard Feynman (verified)“Looking back at the worst times, it always seems that they were times in which there were people who believed with absolute faith and absolute dogmatism in something.”
— Richard Feynman (verified)“Knowledge is of no real value if all you can tell me is what happened yesterday. It is necessary to tell what will happen tomorrow.”
— Richard Feynman (verified)“The prize is the pleasure of finding the thing out.”
— Richard Feynman (verified)More quotes by Richard Feynman →
“Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.”
— Marie Curie (unverified)“The belief in an external world independent of the perceiving subject is the basis of all natural science.”
— Albert Einstein (verified)“Truth was the only daughter of Time.”
— Leonardo da Vinci (verified)“It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things.”
— Leonardo da Vinci (unverified)