Difficult quotes

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Marcus_Aurelius

Master The Difficult

“Because you find a thing very difficult, do not at once conclude that no man can master it. But whatever you observe proper and practicable by another, believe likewise within your own power.”

William_Ian_Beardmore_Beveridge

Role of Hypothesis

“The role of hypothesis in research can be discussed more effectively if we consider first some examples of discoveries which originated from hypotheses. One of the best illustrations of such a discovery is provided by the story of Christopher Columbus’ voyage; it has many of the features of a classic discovery in science. (a) He was obsessed with an idea—that since the world is round he could reach the Orient by sailing West, (b) the idea was by no means original, but evidently he had obtained some additional evidence from a sailor blown off his course who claimed to have reached land in the west and returned, (c) he met great difficulties in getting someone to provide the money to enable him to test his idea as well as in the actual carrying out of the experimental voyage, (d) when finally he succeeded he did not find the expected new route, but instead found a whole new world, (e) despite all evidence to the contrary he clung to the bitter end to his hypothesis and believed that he had found the route to the Orient, (f) he got little credit or reward during his lifetime and neither he nor others realized the full implications of his discovery, (g) since his time evidence has been brought forward showing that he was by no means the first European to reach America.”
  • Source: W. I. B. Beveridge in his book ‘The Art of Scientific Investigation’ published in 1950 by William Heinemann, London, page 41.

Niels_Bohr

Predictions about the Future

“Predictions can be very difficult — especially about the future.”
  • Source: Words spoken by Niels Bohr. Quoted in the book "The University: An Owners Manual" written by H. Rosovsky and published in 1991 by W. W. Norton & Company. See page 147. ISBN: 978-0393307832. It is said that Bohr used to quote this saying to illustrate the differences between Danish and Swedish humour. Bohr always attributed the saying to Robert Storm Petersen (1882-1949), a well-known Danish artist and writer. However, the saying did NOT originate from Petersen. It may have been said in the Danish Parliament between 1935 and 1939 [Information supplied courtesy of Professor Erik Rüdinger, Niels Bohr Archive, Copenhagen].

Keywords: Prediction_quotes Future_quotes Difficult_quotes Especial_quotes

Fred Brooks

Specification Hard

“Even perfect program verification can only establish that a program meets its specification. The hardest part of the software task is arriving at a complete and consistent specification, and much of the essence of building a program is in fact the debugging of the specification.”
  • Source: Brooks Jr., F. P. (1995). The Mythical Man-Month - Essays on Software Engineering (Anniversary Edition) | 1975/1995 (Anniv.). Boston. MA: Addison-Wesley. ISBN: 0201835959. Chapter 16, page 195.

Alexander d'Agapeyeff

Programmer Platoons

"In my experience programmers are rather difficult to shove around like platoons in the army."

Edsger_Wybe_Dijkstra

Competent Programming

“Don't blame me for the fact that competent programming, as I view it as an intellectual possibility, will be too difficult for 'the average programmer' — you must not fall into the trap of rejecting a surgical technique because it is beyond the capabilities of the barber in his shop around the corner.”

David_Epstein

Explorations

“When exploration is too free, it becomes difficult to learn anything at all.”
  • Source: David Epstein in the book “Inside the Box: How Constraints Make Us Better”. Published 2026 by Riverhead Books. Page 31. ISBN 978-0593715734 (Ebook).

Bernardo_Kastrup

Meaningful Coincidence

“Although I do believe that many — even most — experiences of meaningful coincidence are illusory, being mediated by relatively prosaic psychological mechanisms, my own experiences make it very difficult for me to dismiss Jung’s case. In the course of my life, the archetypal meaning occasionally evoked by events in the world around me — in precise alignment with my own inner state, or that of someone close to me — has been just too compelling to attribute to chance or cognitive bias.”
  • Source: From “Decoding Jung's Metaphysics: The Archetypal Semantics of an Experiential Universe”. Written by Bernardo Kastrup. Published by IFF Books, Washington DC. Kindle Edition. Page 55-56. Chapter 4.

John_Maynard_Keynes

Technological Unemployment

“In our own lifetimes... we may be able to perform all the operations of agriculture, mining, and manufacture with a quarter of the human effort to which we have been accustomed. For the moment the very rapidity of these changes is hurting us and bringing difficult problems to solve... We are being afflicted with... technological unemployment. This means unemployment due to our discovery of means of economising the use of labour outrunning the pace at which we can find new uses for labour. But this is only a temporary phase of maladjustment... In the long run... mankind is solving its economic problem. I would predict that the standard of life in progressive countries one hundred years hence will be between four and eight times as high as it is today.”
  • Source: From the Essay “Economic Possibilities for our Grandchildren” written by John Maynard Keynes in 1930. Included in the book “Essays in Persuasion” edited by John Maynard Keynes and published by W. W. Norton & Company in 1963.

Søren_Kierkegaard

Ways To Be Deceived

“One may be deceived in many ways; one may be deceived by believing the false, but one may also be deceived by not believing the true; one may be deceived by appearances, but one may also be deceived by the appearance of shrewdness, by the flattering conceit which is absolutely certain it cannot be deceived. And which deception is the more dangerous? Whose recovery is the more doubtful, that of one who does not see, or his who sees and yet does not see? Which is more difficult — to awaken one who is sleeping, or to awaken one who, awaking, dreams that he is awake?”
  • Source: From the book “Works of Love”, written by Søren_Kierkegaard. Originally published in Danish in Copenhagen, Denmark in 1847. English edition translated by David F. Swenson and Lillian Marvin Swenson, published by Princeton University Press in 1946. Volume 1, chapter I, page 5.

Thomas_Robert_Malthus

Population and Subsistence

“I think I may fairly make two postulata. First, That food is necessary to the existence of man. Secondly, That the passion between the sexes is necessary, and will remain nearly in its present state... Assuming then my postulata as granted, I say, that the power of population is indefinitely greater than the power in the earth to produce subsistence for man. Population, when unchecked, increases in a geometrical ratio. Subsistence increases only in an arithmetical ratio... This implies a strong and constantly operating check on population from the difficulty of subsistence. This difficulty must fall somewhere; and must necessarily be severely felt by a large portion of mankind... The germs of existence contained in this spot of earth, with ample food, and ample room to expand in, would fill millions of worlds in the course of a few thousand years... Consequently, if the premises are just, the argument is conclusive against the perfectibility of the mass of mankind.”
  • Source: Thomas Robert Malthus. The essay: “An Essay on the Principle of Population as It Affects the Future Improvement of Society, with Remarks on the Speculations of Mr. Goodwin, M. Condorcet and Other Writers”. Originally published: 1798. Edition: First. Publisher: J. Johnson. Location: London, England. Chapter: 1. Retrieved From: <https://en.wikisource.org/wiki/An_Essay_on_the_Principle_of_Population>. Retrieval Date: 2024-04-03.
  • Notes: The dire predictions of Malthus have not yet been fulfilled. This is primarily due to errors in his initial assumptions (which are properly identified), not in errors in his logic. The first assumption (or postulatum) is that food production increases arithmetically (linearly). But historically, food production has increased geometrically (exponentially) due to advances in mechanical technologies and biotechnologies. The second assumption assumes passion and birth rates are directly correlated. However, technological advances in birth control, cultural advances in women's rights, and rising prosperity (which lowers birth rates) have falsified this assumption. Additional questionable assumptions are also made which are not initially specified.

Pearl_and_Mackenzie

Strong AI

“The successes of deep learning have been truly remarkable... Nevertheless, deep learning has succeeded primarily by showing that certain questions or tasks we thought were difficult are in fact not. It has not addressed the truly difficult questions that continue to prevent us from achieving humanlike AI. As a result the public believes that ‘strong AI,’ machines that think like humans, is just around the corner or maybe even here already. In reality, nothing could be farther from the truth.”
  • Source: Judea Pearl and Dana Mackenzie in “The Book of Why: The New Science of Cause and Effect”. Published by Basic Books of New York, NY in 2018. Chapter 1, page 30. ISBN 978-0465097616 (ebook).

Plato

Dreaming

“(Socrates) There's a question you must often have heard people ask - the question what evidence we could offer if we were asked whether in this present instant, at this moment, we are asleep and dreaming all our thoughts, or awake and talking to each other in real life.
(Theaetetus) Yes, Socrates, it certainly is difficult to find the proof we want here. The two states seem to correspond in all their characteristics. There is nothing to prevent us from thinking when we are asleep that we are having the very same discussion that we have just had. And when we dream that we are telling the story of a dream, there is an extraordinary likeness between the two experiences.”
  • Source: Plato, 'Theaetetus' 158bc

Donald_Rumsfeld

Unknown Unknowns

“...There are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns — the ones we don't know we don't know... It is the latter category that tends to be the difficult ones.”

Keywords: Known_quotes Knowledge_quotes Unknown_quotes Difficult_quotes

Shoshana_Zuboff

Responsive and Responsible

“As work becomes computer mediated, it is difficult to distinguish responsibility from the work itself. Much of what now constitutes ‘work’ involves the mindfulness and intellective effort necessary for continual responsiveness at the interface. What, finally, is the difference between being responsive and being responsible?”
  • Source: Zuboff, S. (1988). In The Age Of The Smart Machine: The Future Of Work And Power. New York, NY: Basic Books, p. 296. ISBN:0465032125.