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Home > Dictionary of Science Quotations > Scientist Names Index E > Albert Einstein Quotes > Concept

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Albert Einstein
(14 Mar 1879 - 18 Apr 1955)

German-American physicist who developed the special and general theories of relativity. He was awarded the 1921 Nobel Prize for Physics for his explanation of the photoelectric effect.



[An outsider views a scientist] as a type of unscrupulous opportunist: he appears as a realist, insofar as he seeks to describe the world independent of the act of perception; as idealist insofar as he looks upon the concepts and theories as the free inventions of the human spirit (not logically derivable from that which is empirically given); as positivist insofar as he considers his concepts and theories justified only to the extent to which they furnish a logical representation of relations among sense experiences. He may even appear as Platonist or Pythagorean insofar as he considers the viewpoint of logical simplicity as an indispensable and effective tool of his research.
— Albert Einstein
In 'Reply to Critcisms', Paul Arthur Schilpp (ed.), Albert Einstein: Philosopher-Scientist (1949, 1959), Vol. 2, 684.
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A theory is the more impressive the greater the simplicity of its premises is, the more different kinds of things it relates, and the more extended is its area of applicability. Therefore the deep impression which classical thermodynamics made upon me. It is the only physical theory of universal content concerning which I am convinced that within the framework of the applicability of its basic concepts, it will never be overthrown.
— Albert Einstein
Autobiographical Notes (1946), 33. Quoted in Gerald Holton and Yehuda Elkana, Albert Einstein: Historical and Cultural Perspectives (1997), 227.
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Common to all these types is the anthropomorphic character of their conception of God. In general, only individuals of exceptional endowments, and exceptionally high-minded communities, rise to any considerable extent above this level. But there is a third stage of religious experience which belongs to all of them, even though it is rarely found in a pure form: I shall call it cosmic religious feeling. It is very difficult to elucidate this feeling to anyone who is entirely without it, especially as there is no anthropomorphic conception of God corresponding to it.
— Albert Einstein
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Concepts that have proven useful in ordering thi ngs easily achieve such authority over us that we forget their earthly origins and accept them as unalterable givens.
— Albert Einstein
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However, all scientific statements and laws have one characteristic in common: they are “true or false” (adequate or inadequate). Roughly speaking, our reaction to them is “yes” or “no.” The scientific way of thinking has a further characteristic. The concepts which it uses to build up its coherent systems are not expressing emotions. For the scientist, there is only “being,” but no wishing, no valuing, no good, no evil; no goal. As long as we remain within the realm of science proper, we can never meet with a sentence of the type: “Thou shalt not lie.” There is something like a Puritan's restraint in the scientist who seeks truth: he keeps away from everything voluntaristic or emotional.
— Albert Einstein
Essays in Physics (1950), 68.
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I cannot accept any concept of God based on the fear of life or the fear of death, or blind faith.
— Albert Einstein
As recollected from a visit some months earlier, and quoted in William Miller, 'Old Man’s Advice to Youth: “Never Lose a Holy Curiosity”', Life (2 May 1955), 62.
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If we consider that part of the theory of relativity which may nowadays in a sense be regarded as bone fide scientific knowledge, we note two aspects which have a major bearing on this theory. The whole development of the theory turns on the question of whether there are physically preferred states of motion in Nature (physical relativity problem). Also, concepts and distinctions are only admissible to the extent that observable facts can be assigned to them without ambiguity (stipulation that concepts and distinctions should have meaning). This postulate, pertaining to epistemology, proves to be of fundamental importance.
— Albert Einstein
'Fundamental ideas and problems of the theory of relativity', Lecture delivered to the Nordic Assembly of Naturalists at Gothenburg, 11 Jul 1923. In Nobel Physics 1901-1921 (1998), 482.
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It follows from the theory of relativity that mass and energy are both different manifestations of the same thing—a somewhat unfamiliar conception for the average man. Furthermore E=MC2, in which energy is put equal to mass multiplied with the square of the velocity of light, showed that a very small amount of mass may be converted into a very large amount of energy... the mass and energy were in fact equivalent.
— Albert Einstein
As expressed in the Einstein film, produced by Nova Television (1979). Quoted in Alice Calaprice, The Quotable Einstein (1996), 183.
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It must be conceded that a theory has an important advantage if its basic concepts and fundamental hypotheses are 'close to experience,' and greater confidence in such a theory is certainly justified. There is less danger of going completely astray, particularly since it takes so much less time and effort to disprove such theories by experience. Yet more and more, as the depth of our knowledge increases, we must give up this advantage in our quest for logical simplicity in the foundations of physical theory...
— Albert Einstein
'On the Generalized Theory of Gravitation', Scientific American (Apr 1950), 13. In David H. Levy (Ed.), The Scientific American Book of the Cosmos (2000), 19.
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It seems to me that the idea of a personal God is an anthropological concept which I cannot take seriously. I also cannot imagine some will or goal outside the human sphere has been cited as a statement that precedes the last three sentences here, but this might have originated in a paraphrase, a transcription error, or a misquotation; it does not appear in any editions of the essay which have thus far been checked.
— Albert Einstein
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It would not be difficult to come to an agreement as to what we understand by science. Science is the century-old endeavor to bring together by means of systematic thought the perceptible phenomena of this world into as thoroughgoing an association as possible. To put it boldly, it is the attempt at the posterior reconstruction of existence by the process of conceptualization. But when asking myself what religion is I cannot think of the answer so easily. And even after finding an answer which may satisfy me at this particular moment, I still remain convinced that I can never under any circumstances bring together, even to a slight extent, the thoughts of all those who have given this question serious consideration.
— Albert Einstein
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No one must think that Newton’s great creation can be overthrown in any real sense by this [Theory of Relativity] or by any other theory. His clear and wide ideas will for ever retain their significance as the foundation on which our modern conceptions of physics have been built.
— Albert Einstein
In 'Time, Space, and Gravitation', The Times (28 Nov 1919). Excerpted in David E. Rowe and Robert J. Schulmann, Einstein on Politics: His Private Thoughts and Public Stands on Nationalism, Zionism, War, Peace, and the Bomb (2007), 104.
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Our experience up to date justifies us in feeling sure that in Nature is actualized the ideal of mathematical simplicity. It is my conviction that pure mathematical construction enables us to discover the concepts and the laws connecting them, which gives us the key to understanding nature… In a certain sense, therefore, I hold it true that pure thought can grasp reality, as the ancients dreamed.
— Albert Einstein
In Herbert Spencer Lecture at Oxford (10 Jun 1933), 'On the Methods of Theoretical Physics'. Printed in Discovery (Jul 1933), 14, 227. Also quoted in Stefano Zambelli and Donald A. R. George, Nonlinearity, Complexity and Randomness in Economics (2012).
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Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world. In our endeavour to understand reality we are somewhat like a man trying to understand the mechanism of a closed watch. He sees the face and the moving hands, even hears its ticking, but he has no way of opening the case. If he is ingenious he may form some picture of a mechanism which could be responsible for all the things he observes, but he may never be quite sure his picture is the only one which could explain his observations. He will never be able to compare his picture with the real mechanism and he cannot even imagine the possibility or the meaning of such a comparison. But he certainly believes that, as his knowledge increases, his picture of reality will become simpler and simpler and will explain a wider and wider range of his sensuous impressions. He may also believe in the existence of the ideal limit of knowledge and that it is approached by the human mind. He may call this ideal limit the objective truth.
— Albert Einstein
Albert Einstein and Leopold Infeld, The Evolution of Physics (1938), 33.
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The aim of science is, on the one hand, as complete a comprehension as possible of the connection between perceptible experiences in their totality, and, on the other hand, the achievement of this aim by employing a minimum of primary concepts and relations.
— Albert Einstein
H. Cuny, Albert Einstein: The Man and his Theories (1963), 128.
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The desire for guidance, love, and support prompts men to form the social or moral conception of God. This is the God of Providence, who protects, disposes, rewards, and punishes; the God who, according to the limits of the believer’s outlook, loves and cherishes the life of the tribe or of the human race, or even or life itself; the comforter in sorrow and unsatisfied longing; he who preserves the souls of the dead. This is the social or moral conception of God.
— Albert Einstein
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The fact that man produces a concept ‘I’ besides the totality of his mental and emotional experiences or perceptions does not prove that there must be any specific existence behind such a concept. We are succumbing to illusions produced by our self-created language, without reaching a better understanding of anything. Most of so-called philosophy is due to this kind of fallacy.
— Albert Einstein
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The importance of C.F. Gauss for the development of modern physical theory and especially for the mathematical fundament of the theory of relativity is overwhelming indeed; also his achievement of the system of absolute measurement in the field of electromagnetism. In my opinion it is impossible to achieve a coherent objective picture of the world on the basis of concepts which are taken more or less from inner psychological experience.
— Albert Einstein
Quoted in G. Waldo Dunnington, Carl Friedrich Gauss: Titan of Science (2004), 350.
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The main source of the present-day conflicts between the spheres of religion and of science lies in this concept of a personal God.
— Albert Einstein
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The physicist cannot simply surrender to the philosopher the critical contemplation of the theoretical foundations for he himself knows best and feels most surely where the shoe pinches. … he must try to make clear in his own mind just how far the concepts which he uses are justified … The whole of science is nothing more than a refinement of everyday thinking. It is for this reason that the critical thinking of the physicist cannot possibly be restricted by the examination of the concepts of his own specific field. He cannot proceed without considering critically a much more difficult problem, the problem of analyzing the nature of everyday thinking.
— Albert Einstein
‘Physics and Reality’, Franklin Institute Journal (Mar 1936). Collected in Out of My Later Years (1950), 59.
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The scientific theorist is not to be envied. For Nature, or more precisely experiment, is an inexorable and not very friendly judge of his work. It never says “Yes” to a theory. In the most favorable cases it says “Maybe,” and in the great majority of cases simply “No.” If an experiment agrees with a theory it means for the latter “Maybe,” and if it does not agree it means “No.” Probably every theory will someday experience its “No”—most theories, soon after conception.
— Albert Einstein
In Albert Einstein: The Human Side by Helen Dukas and Banesh Hoffmann (1979).
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There is no inductive method which could lead to the fundamental concepts of physics. Failure to understand this fact constituted the basic philosophical error of so many investigators of the nineteenth century.
— Albert Einstein
Opening of section 4, 'The Theory of Relativity', in Physics and Reality (1936), collected in Essays in Physics (1950), 34.
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Therefore it is by no means an idle game if we become practiced in analysing long-held commonplace concepts and showing the circumstances on which their justification and usefulness depend, and how they have grown up, individually, out of the givens of experience. Thus their excessive authority will be broken.
— Albert Einstein
…...
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This change in the conception of reality is the most profound and the most fruitful that physics has experienced since the time of Newton.
Refering to James Clerk Maxwell's contributions to physics.
— Albert Einstein
'Maxwell's Influence on the Development of the Conception of Physical Reality', James Clerk Maxwell: A Commemorative Volume 1831-1931 (1931), 71.
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This is the reason why all attempts to obtain a deeper knowledge of the foundations of physics seem doomed to me unless the basic concepts are in accordance with general relativity from the beginning. This situation makes it difficult to use our empirical knowledge, however comprehensive, in looking for the fundamental concepts and relations of physics, and it forces us to apply free speculation to a much greater extent than is presently assumed by most physicists.
— Albert Einstein
…...
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We come now to the question: what is a priori certain or necessary, respectively in geometry (doctrine of space) or its foundations? Formerly we thought everything; nowadays we think nothing. Already the distance-concept is logically arbitrary; there need be no things that correspond to it, even approximately.
— Albert Einstein
In article he wrote, 'Space-Time', for Encyclopaedia Britannica (14th ed., 1929), Vol. 21, 106.
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What distinguishes the language of science from language as we ordinarily understand the word? … What science strives for is an utmost acuteness and clarity of concepts as regards their mutual relation and their correspondence to sensory data.
— Albert Einstein
In Out of My Later Years (1950, 1956), 112. Footnoted on page 277 as from 'The Common Language of Science', a broadcast recording for the Science Conference, London (28 Sep 1941) and published in Advancement of Science, 2, No. 5, 16.
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What nature demands of us is not a quantum theory or a wave theory, instead nature demands of us a synthesis both conceptions, which, to be sure, until now still exceeds the powers of thought of the physicists.
— Albert Einstein
Concluding remark in Lecture (23 Feb 1927) to Mathematisch-physikalische Arbeitsgemeinschaft, University of Berlin, reported in 'Theoretisches und Experimentelles zur Frage der Lichtentstehung', Zeitschr. f. ang. Chem., 40, 546. As translated and cited in Arthur I. Miller, Sixty-Two Years of Uncertainty: Historical, Philosophical, and Physical Inquiries into the Foundations of Quantum Mechanics (2012), 89 & 108.
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See also:
  • 14 Mar - short biography, births, deaths and events on date of Einstein's birth.
  • Albert Einstein - Context of “God … integrates empirically” quote - Medium image (500 x 350 px)
  • Albert Einstein - Context of “Laws of mathematics refer to reality” quote
  • Albert Einstein - Context of “Laws of mathematics refer to reality” quote - with Large image (800 x 600 px).
  • Albert Einstein - Context of “God … integrates empirically” quote - Large image (800 x 600 px)
  • Albert Einstein - context of quote Mathematics…a product of human thought - Medium image (500 x 350 px)
  • Albert Einstein - context of quote Mathematics…a product of human thought - Large image (800 x 600 px)
  • Large color picture of Albert Einstein (850 x 1000 px).
  • Albert Einstein - context of quote “Politics is more difficult than physics” - Medium image (500 x 350 px)
  • Albert Einstein - context of quote “Politics is more difficult than physics” - Large image (800 x 600 px)
  • Albert Einstein - context of quote “Science without religion is lame; religion without science is blind.” - Medium image (500 x 350 px)
  • Albert Einstein - context of quote “Science without religion is lame; religion without science is blind.” - Large image (800 x 600 px)
  • Albert Einstein - My Theory - The Times (1919).
  • Geometry and Experience - Address by Albert Einstein to the Prussian Academy of Sciences (27 Jan 1921).
  • Even Einstein's Little Universe Is Big Enough - New York Times article (2 Feb 1921).
  • Albert Einstein - context of quote The Lord God is subtle - Medium image (500 x 350 px)
  • Albert Einstein - context of quote The Lord God is subtle - Large image (800 x 600 px)
  • Albert Einstein - context of quote Imagination is more important than knowledge - Medium image (500 x 350 px)
  • Albert Einstein - context of quote Imagination is more important than knowledge - Large image (800 x 600 px)
  • Albert Einstein - context of quote A theory can be proved by experiment - Medium image (500 x 350 px)
  • Albert Einstein - context of quote A theory can be proved by experiment - Large image (800 x 600 px)
  • Albert Einstein - context of quote Falling in love is not at all the most stupid thing - Medium image (500 x 350 px)
  • Albert Einstein - context of quote Falling in love is not at all the most stupid thing - Large image (800 x 600 px)
  • Albert Einstein - context of quote That is relativity - Medium image (500 x 350 px)
  • Albert Einstein - context of quote That is relativity - Large image (800 x 600 px)
  • Albert Einstein - context of quote “One thing I have learned in a long life” - Medium image (500 x 350 px)
  • Albert Einstein - context of quote One thing I have learned in a long life - Large image (800 x 600 px)
  • Albert Einstein - context of quote “Why is the electron negative?” - Medium image (500 x 350 px)
  • Albert Einstein - context of quote “Why is the electron negative?” - Large image (800 x 600 px)
  • Albert Einstein - context of quote “The formulation of a problem is often far more essential than its solution” - Medium image (500 x 350 px)
  • Albert Einstein - context of quote “The formulation of a problem is often far more essential than its solution” - Large image (800 x 600 px)
  • Albert Einstein - context of quote “Our exalted technological progress” - Medium image (500 x 350 px)
  • Albert Einstein - context of quote “Our exalted technological progress” - Large image (800 x 600 px)
  • Albert Einstein - context of quote “There exists a passion for comprehension” - Medium image (500 x 350 px)
  • Albert Einstein - context of quote “There exists a passion for comprehension” - Large image (800 x 600 px)
  • Albert Einstein - context of quote “An equation is for eternity” - Medium image (500 x 350 px)
  • Albert Einstein - context of quote “An equation is for eternity” - Large image (800 x 600 px)
  • Subtle Is the Lord: The Science and the Life of Albert Einstein, by Abraham Pais. - book suggestion.
  • Booklist for Albert Einstein.

Carl Sagan Thumbnail In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion. (1987) -- Carl Sagan
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