Exist quotes

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Robert_N_Britcher

Complexity of Loops

“... within a procedure, fascinating problems exist - for example, verifying the correctness of a loop, one of the most complex structures in logic.”
  • Source: Britcher, Robert N. (1999). The Limits of Software: People, Projects, and Perspectives. Reading, MA: Addison Wesley. ISBN 0-201-43323-0. Page 112.

Samuel_C_Florman

Enlightenment

“Ever since the days of the eighteenth-century Enlightenment, men had been tantalized by the thought that social and moral truths existed, just like scientific truths, and could be discovered by the application of ‘right reason.’”
  • Source: From the book “The Existential Pleasures of Engineering” by {Samuel C. Florman}. Second edition published in 1994 by {St. Martin's Press}, New York, NY. First edition published in 1976. Kindle edition published in 2023. E-book ISBN 978-1466842366. Chapter 1, page 7.

Yuval_Noah_Harari

Truth

“‘Truth’ is understood as something that accurately represents certain aspects of reality. Underlying the notion of truth is the premise that there exists one universal reality. Anything that has ever existed or will ever exist in the universe.”
  • Source: Yuval Noah Harari writing in his book ‘Nexus: A Brief History of Information Networks from the Stone Age to AI’. Published in 2024 by Random House. Kindle edition. Chapter 1 page 7. ISBN 978-0593734247.

Brooks_Jackson and Kathleen_Hall_Jamieson

Psychological Experiments

“Psychological experiments have shown ... that humans tend to seek out even weak evidence to support their existing beliefs, and to ignore evidence that undercuts those beliefs. In the process, we apply stringent tests to evidence we don't want to hear, while letting slide uncritically into our minds any information that suits our needs.”
  • Source: Brooks Jackson, As co-author with Kathleen Hall Jamieson, in unSpun: Finding Facts in a World of Disinformation (2007), 69-70.

Thomas_Jefferson

Tree of Liberty

“What country before ever existed a century and a half without a rebellion?... The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants. It is its natural manure.”
  • Source: Thomas Jefferson in a letter to William Stevens Smith dated 1787-11-12.

Carl_Jung

Wealth of the Soul

“The wealth of the soul exists in images.”
  • Source: Written by Carl G. Jung in ‘The Red Book’, also known as ‘Liber Novus’, which was originally written from 1914 to 1930. It was first published in 2009 by W. W. Norton in a facsimile edition, complete with an English translation. The edition used here is the book ‘The Red Book: Liber Novus: A Reader's Edition’, written by C. G. Jung, edited with an introduction by Sonu Shamdasani, translated by Mark Kyburz, John Peck, and Sonu Shamdasani; published by W. W. Norton in 2012; ISBN 978-0393089080; Page 130.

Keywords: Soul_quotes Wealth_quotes Exist_quotes Image_quotes

Johannes_Kepler

Physical Causes

“Some physical causes are recognized by all; others, by only very few people; indeed, many things exist naturally, but from causes hitherto known to no man. And of the causes, which we know, there are some whose kind and nature we all usually understand, and others whose kind or indirect cause are understood by very few people, or by nobody.”
  • Source: Johannes Kepler in “Fundamentis. Astrologiae Certioribus - Thesis IV”.

David_Kipping

Simulation Depth Limit

“Given... the ensemble of all [simulated] realities that will ever exist, one might wonder how deep the rabbit hole goes... There should exist some limit to how deep the generations can indeed go... This is motivated by the fact the base civilization is truly responsible for simulating all of the daughters beneath it, and it presumably has some finite computational limit at its disposal.”
  • Source: David Kipping from the paper “A Bayesian Approach to the Simulation Argument”, published 2020 in the journal ‘Universe’, volume 6, issue 8. DOI:10.3390/universe6080109. Online at https://www.mdpi.com/2218-1997/6/8/109 (2025).

Peter_Medawar

Scientific Method

"The fact that scientists do not consciously practice a formal methodology is very poor evidence that no such methodology exists. It could be said — has been said — that there is a distinctive methodology of science which scientists practice unwittingly, like the chap in Moliere who found that all his life, unknowingly, he had been speaking prose.”
  • Source: Sir Peter B. Medawar, Induction and Intuition in Scientific Thought (1969), 9.

Plato

Opinion Explanation

“All those who have a right opinion about anything will also have right explanation, nor will right opinion be anywhere found to exist apart from knowledge.”

Todd_Rose

Average Size

“Daniels’s study revealed there was no such thing as an average-size pilot, the [Dickinson] Norma Look-Alike contest demonstrated that average-size women did not exist either.”
  • Source: From the book “The End of Average: How We Succeed in a World That Values Sameness”, written by Todd Rose, published 2016 by HarperCollins, Kindle Edition, page 7. ISBN: 978-0062358387 (e-book).

Gerald_Weinberg

Vending Machines

“When the vending machines had been in the common room, a large crowd always hovered around them — but not particularly for fol-de-rol, as the manager had so quickly assumed... Informal mechanisms always exist and it is dangerous to change things without understanding them.”
  • Source: Chapter 4. Weinberg, G. M. (2011). The Psychology of Computer Programming (Silver anniversary edition) | 1971. Weinberg & Weinberg.

Stephen_Wolfram

Computational Irreducibility

“I’ve increasingly come to view the whole fundamental story of science as being about the interplay between computational irreducibility and computational reducibility. The computational nature of things inevitably leads to computational irreducibility. But there are slices of computational reducibility that inevitably exist on top of this irreducibility that are what make it possible for us — as computationally bounded entities — to identify meaningful scientific laws and to do science.”