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Observation

active acquisition of information from a primary source
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Observation is the active acquisition of information from a primary source. In living beings, observation employs the senses. In science, observation can also involve the recording of data via the use of instruments. The term may also refer to any data collected during the scientific activity.

None can be an impartial or wise observer of human life but from the vantage ground of what we should call voluntary poverty. ~ Henry David Thoreau

Arranged alphabetically by author or source:
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Quotes

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A

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  • If a tree falls in a forest, and no-one is around to hear it, does it make a noise?
    • Anonymous, but apparently originating in the twentieth century; a 1910 physics book asks "When a tree falls in a lonely forest, and no animal is near by to hear it, does it make a sound? Why?" Charles Riborg Mann, George Ransom Twiss, Physics (1910), p. 235. See also: If a tree falls in a forest.
  • Whether if soul did not exist time would exist or not, is a question that may fairly be asked; for if there cannot be someone to count there cannot be anything that can be counted, so that evidently there cannot be number; for number is either what has been, or what can be, counted.
  • Nothing has such power to broaden the mind as the ability to investigate systematically and truly all that comes under thy observation in life.

B

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  • The great extension of our experience in recent years has brought light to the insufficiency of our simple mechanical conceptions and, as a consequence, has shaken the foundation on which the customary interpretation of observation was based.
    • Niels Bohr, "Atomic Physics and the Description of Nature" (1934)

C

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  • Words, as is well known, are the great foes of reality. I have been for many years a teacher of languages. It is an occupation which at length becomes fatal to whatever share of imagination, observation, and insight an ordinary person may be heir to. To a teacher of languages there comes a time when the world is but a place of many words and man appears a mere talking animal not much more wonderful than a parrot.

D

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  • The way our group or class does things tends to determine the proper objects of attention, and thus prescribe the directions and limits of observation and memory.
    • John Dewey (1916), Democracy and Education Section 2: Education as a Social Function
  • The philosopher forms his principles from an infinity of particular observations. Most people adopt principles without thinking of the observations that have produced them, they believe the maxims exist, so to speak, by themselves. But the philosopher takes maxims from their source; he examines their origin; he knows their proper value, and he makes use of them only in so far as they suit him.
    Truth is not for the philosopher a mistress who corrupts his imagination and whom he believes to be found everywhere; he contents himself with being able to unravel it where he can perceive it. He does not confound it with probability; he takes for true what is true, for false what is false, for doubtful what is doubtful, and probable what is only probable. He does more, and here you have a great perfection of the philosopher: when he has no reason by which to judge, he knows how to live in suspension of judgment...
    The philosophical spirit is, then, a spirit of observation and exactness, which relates everything to true principles...

E

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  • It is also a good rule not to put overmuch confidence in the observational results that are put forward until they are confirmed by theory.
  • For the truth of the conclusions of physical science, observation is the supreme Court of Appeal. It does not follow that every item which we confidently accept as physical knowledge has actually been certified by the Court; our confidence is that it would be certified by the Court if it were submitted. But it does follow that every item of physical knowledge is of a form which might be submitted to the Court. It must be such that we can specify (although it may be impracticable to carry out) an observational procedure which would decide whether it is true or not. Clearly a statement cannot be tested by observation unless it is an assertion about the results of observation. Every item of physical knowledge must therefore be an assertion of what has been or would be the result of carrying out a specified observational procedure.

F

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  • The philosophy behind much advertising is based on the old observation that every man is really two men - the man he is and the man he wants to be.
  • At any one time there is a natural tendency among physicists to believe that we already know the essential ingredients of a comprehensive theory. But each time a new frontier of observation is broached we inevitably discover new phenomena which force us to modify substantially our previous conceptions. I believe this process to be unending, that the delights and challenges of unexpected discovery will continue always.

G

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When people endure a traumatic event, they are either defeated or made stronger. On Sept. 11, I told New Yorkers, 'I want you to emerge stronger from this.' My words were partially a hope and partially an observation that people in New York City handle big things better than little things. I could not be more proud of the way my city responded. - Rudy Giuliani
  • When people endure a traumatic event, they are either defeated or made stronger. On Sept. 11, I told New Yorkers, 'I want you to emerge stronger from this.' My words were partially a hope and partially an observation that people in New York City handle big things better than little things. I could not be more proud of the way my city responded.

H

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  • Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic.

I

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  • It's my observation that gardeners and gardening for a very long time have had to take a back seat. Architects are very famous; they've got huge projects. What goes on in and around them has been relegated to a very minor role.

J

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  • Even scientific knowledge, if there is anything to it, is not a random observation of random objects; for the critical objectivity of significant knowledge is attained as a practice only philosophically in inner action.
  • Quis custodiet ipsos custodes?

K

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  • Not observation of a duty but liberty itself is the pledge that assures fidelity.

L

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  • We must trust to nothing but facts: these are presented to us by nature and cannot deceive. We ought, in every instance, to submit our reasoning to the test of experiment, and never to search for truth but by the natural road of experiment and observation.
  • And when he was demanded of the Pharisees, when the kingdom of God should come, he answered them and said, The kingdom of God cometh not with observation: Neither shall they say, Lo here! or, lo there! for, behold, the kingdom of God is within you.

M

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  • Scientists believe that nature is orderly and measurable— that natural laws, such as the law of gravity, do not change with time, and that a natural event, or phenomenon,can be understood more fully through observation. Scientists use all of their senses in making observations.
    • Sylvia S. Mader, Biology (10th ed., 2010), Ch. 1. A View of Life
  • It has become extremely questionable whether, in the flux of life, it is a genuinely worthwhile intellectual problem to seek to discover fixed and immutable ideas or absolutes. It is a more worthy intellectual task perhaps to learn to think dynamically and relationally rather than statically... When the empirical investigator glories in his refusal to go beyond the specialized observation dictated by the traditions of his discipline, be they ever so inclusive, he is making a virtue out of a defense mechanism which insures him against questioning his presuppositions.
  • It seems to me, when I see nature, that I see it ready made, completely written — but then, try to do it! All this proves that one must think of nothing but them [impressions]; it is by dint of observation and reflection that one makes discoveries.
  • Yeah. Yeah, that's right. Pregnant woman. Gunned her down. Bang. And y'know what? You watched me. You coulda changed the gun into steam or the bullets into mercury or the bottle into god damn snowflakes! You coulda teleported either of us to goddamn Australia...but you didn't lift a finger! You don't really give a damn about human beings. I've watched you. You never cared about what's her name, Janey Slater, even before you ditched her. Soon you won't be interested in Sally Jupiter's little girl, either. You're driftin' outta touch, Doc. You're turnin' into a flake. God help us all.
  • Everything is literally entangled, it can all be communicated with and affected 'at a distance' because there is no distance, only a simulation of apparent separation which our limited consciousness feeds us second by second at 11 bits. The 'telepathy' which brings people together is no more or less supernatural or unlikely than the 'telepathy' which brings two of your fingers together when you think about it. Patience, participation and constant close observation of what's going on, on the inside and on the outside will soon make you a fine sorcerer, if that's what you want to be.

N

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  • Even if it had not been possible to reproduce the disease in animals and consequently to verify the hypothesis, this simple observation would have been sufficient to demonstrate the way in which the disease was propagated.

O

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P

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  • Dans les champs de l'observation le hasard ne favorise que les esprits préparés.
    • In the fields of observation chance favors only the prepared mind.
    • Louis Pasteur Lecture, University of Lille (7 December 1854)
    • Alternate translations of this or similar statements include:
      • Chance favors the prepared mind.
      • Fortune favors the prepared mind.
      • In the field of observation, chance favors the prepared mind.
      • Where observation is concerned, chance favors only the prepared mind.
 
The only possible way of accounting for the laws of nature and for uniformity in general is to suppose them results of evolution. This supposes them not to be absolute, not to be obeyed precisely. It makes an element of indeterminacy, spontaneity, or absolute chance in nature. Just as, when we attempt to verify any physical law, we find our observations cannot be precisely satisfied by it,... - Charles Sanders Peirce
  • The only possible way of accounting for the laws of nature and for uniformity in general is to suppose them results of evolution. This supposes them not to be absolute, not to be obeyed precisely. It makes an element of indeterminacy, spontaneity, or absolute chance in nature. Just as, when we attempt to verify any physical law, we find our observations cannot be precisely satisfied by it, and rightly attribute the discrepancy to errors of observation, so we must suppose far more minute discrepancies to exist owing to the imperfect cogency of the law itself, to a certain swerving of the facts from any definite formula.

Q

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R

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  • Art that means anything in the life of a community must bear some relation to current interpretations of the mystery of the universe. Our rigid separation of the humanities and the sciences has temporarily left our art stranded or stammering and incoherent. Both art and science ought to be blended in our early education of our children's emotions and powers of observation, and that harmony carried forward in later education.

S

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  • Most, if not all, of the great ideas of modern mathematics have had their origin in observation.
    • James Joseph Sylvester. "A Plea for the Mathematician," Nature, Vol. 1, p. 238; Collected Mathematical Papers, Vol. 2, pp. 655, 656.
  • Much of my work in this period was concerned with exploring the logic of economic models, but also with attempting to reconcile the models with every day observation.

T

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W

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  • My observation is that whenever one person is found adequate to the discharge of a duty... it is worse executed by two persons, and scarcely done at all if three or more are employed therein.
  • The gap between our feelings and our social observation is dangerously wide.
  • Surely it is time to examine into the meaning of words and the nature of things, and to arrive at simple facts, not received upon the dictum of learned authorities, but upon attentive personal observation of what is passing around us.

Z

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  • Whether we consider Nazi Germany or Abu Ghraib prison, there were many people who observed what was happening and said nothing. At Abu Ghraib, one photo shows two soldiers smiling before a pyramid of naked prisoners while a dozen other soldiers stand around watching passively. If you observe such abuses and don’t say, “This is wrong! Stop it!” you give tacit approval to continue. You are part of the silent majority that makes evil deeds more acceptable.
    • Philip Zimbardo The Banality of Heroism in The Greater Good (Fall/Winter 2006/2007), co-written with Zeno Franco

See also

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Wikipedia
Wikipedia has an article about:
 
Wiktionary
Look up observation in Wiktionary, the free dictionary
Philosophy of science
Concepts Analysis • A priori and a posteriori • Causality • Demarcation problem • Fact • Inductive reasoning • Inquiry • Nature • Objectivity • Observation • Paradigm • Problem of induction • Scientific method • Scientific revolution • Scientific theory •
Related topics Alchemy • Epistemology • History of science • Logic • Metaphysics • Pseudoscience • Relationship between religion and science • Sociology of scientific knowledge
Philosophers of science Plato • Aristotle • Stoicism
Averroes • Avicenna • Roger Bacon • William of Ockham
Francis Bacon • Thomas Hobbes • René Descartes • Galileo Galilei • Pierre Gassendi • Isaac Newton • David Hume
Immanuel Kant • Friedrich Schelling • William Whewell • Auguste Comte • John Stuart Mill • Herbert Spencer • Wilhelm Wundt • Charles Sanders Peirce • Henri Poincaré • Pierre Duhem • Rudolf Steiner • Karl Pearson
Alfred North Whitehead • Bertrand Russell • Albert Einstein • Otto Neurath • C. D. Broad • Michael Polanyi • Hans Reichenbach • Rudolf Carnap • Karl Popper • W. V. O. Quine • Thomas Kuhn • Imre Lakatos • Paul Feyerabend • Jürgen Habermas • Ian Hacking • Bas van Fraassen • Larry Laudan • Daniel Dennett
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