Statement on the Atomic Bomb to Raymond Swing, before 1 October 1945, as reported in Atlantic Monthly, vol. 176, no. 5 (November 1945), in Einstein on Politics, p. 373
1940s
Albert Einstein Quotes
Letter to J.S. Switzer (23 April 1953), quoted in The Scientific Revolution: a Hstoriographical Inquiry By H. Floris Cohen (1994), p. 234 http://books.google.com/books?id=wu8b2NAqnb0C&lpg=PP1&pg=PA234#v=onepage&q&f=false, and also partly quoted in The Ultimate Quotable Einstein edited by Alice Calaprice (2010), p. 405 http://books.google.com/books?id=G_iziBAPXtEC&lpg=PP1&pg=PA405#v=onepage&q&f=false
1950s
1930s, Wisehart interview (1930)
Letter to Rabbi Solomon Goldman of Chicago's Anshe Emet Congregation, p. 51
Attributed in posthumous publications, Einstein's God (1997)
Miscellaneous http://books.google.com/books?id=cvlOAAAAMAAJ&q=%22Everyone+sits+in+the+prison+of+his+own+ideas+he+must+burst+it+open+and+that+in+his+youth+and+so+try+to+test+his+ideas+on+reality%22&pg=PA104#v=onepage, Cosmic Religion, p. 104 (1931)
1930s
“A little knowledge is a dangerous thing. So is a lot.”
A variation on a quotation of Alexander Pope, attributed to Einstein in various recent sources, such as Marvin Minsky's The Emotion Machine (2006), p. 176 http://books.google.com/books?id=OqbMnWDKIJ4C&lpg=PP1&pg=PA176#v=onepage&q&f=false, and at the start of the 2006 pilot episode of the television series Eureka. The oldest published source located attributing this to Einstein is the 2004 book Strategic Investment: Real Options and Games by Han T. J. Smit and Lenos Trigeorgis, p. 429 http://books.google.com/books?id=pN41ZtNoqBEC&lpg=PP1&pg=PA429#v=onepage&q&f=false, and before that it was attributed to him on the internet, the earliest example found being this post from 19 May 1995 http://groups.google.com/group/bit.listserv.physhare/msg/ef186aec3bf66ba6. But long before that, the same quote appears in an advertisement for Encyclopaedia Britannica that ran in The Atlantic Monthly: Volume 216 from 1965, p. 139 http://books.google.com/books?id=TuMmAQAAIAAJ&q=%22so+is+a+lot%22#search_anchor. The ad mentioned Einstein but did not directly attribute the quote to him: "Encyclopaedia Britannica says: A little knowledge is a dangerous thing. So is a lot. The more you know, the more you need to know — as Albert Einstein, for one, might have told you. Great knowledge has a way of bringing with it great responsibility. The people who put the Encyclopaedia Britannica together feel the same way. After all, if most of the world had come to count on you as the best single source of complete, accurate, up-to-date information on everything, you'd want to be pretty sure you knew what you were talking about."
Misattributed
“That is simple, my friend. It is because Politics is more difficult than physics.”
Einstein when asked "Dr. Einstein, why is it that when the mind of man has stretched so far as to discover the structure of the atom we have been unable to devise the political means to keep the atom from destroying us?” a conferee at a meeting at Princeton, N.J. (Jan 1946), as recalled by Greenville Clark in "Letters to the Times" in New York Times (22 Apr 1955), 24
1940s
Variant: That is simple, my friend. It is because Politics is more difficult than physics.
As recalled by his biographer Abraham Pais in Reviews of Modern Physics, 51, 863 (1979): 907. Cited in Boojums All The Way Through by N. David Mermin (1990), p. 81 http://books.google.com/books?id=bf5bjBk095UC&lpg=PP1&pg=PA81#v=onepage&q&f=false
Attributed in posthumous publications
Geh recht viel spazieren, dass Du recht gesund wirst und lies nicht gar zu viel sondern spar Dir noch was auf bis Du gross bist.
Letter to his son Eduard Einstein (June 1918)
1910s
Source: Attributed in posthumous publications, Einstein and the Poet (1983), p. 135
1950s, On the Generalized Theory of Gravitation (1950)
Einstein discussing the letter he sent Roosevelt raising the possibility of atomic weapons. from "Atom: Einstein, the Man Who Started It All," Newsweek Magazine (10 March 1947).
1940s
Response to being shown a "Ripley's Believe It or Not!" column with the headline "Greatest Living Mathematician Failed in Mathematics" in 1935. Quoted in Einstein: His Life and Universe by Walter Isaacson (2007), p. 16 http://books.google.com/books?id=cdxWNE7NY6QC&lpg=PP1&pg=PA16#v=onepage&q&f=false
1930s
Einstein's letter http://www.teslasociety.com/einsteinletter.jpg to Nikola Tesla for Tesla's 75th birthday (1931)
1930s
When asked the question, “Why a ‘Jewish’ University?” when Einstein was assisting Chaim Weizmann in fundraising for The Hebrew University of Jerusalem.
As quoted in [Albert Einstein, Letter “Einstein in Singapore.” Manchester Guardian, October 12, 1929]
1920s
Source: Attributed in posthumous publications, Einstein and the Poet (1983), p. 94
Source: Attributed in posthumous publications, Einstein and the Poet (1983), p. 108
Letter to the Michelson Commemorative Meeting of the Cleveland Physics Society (1952), as quoted by R.S.Shankland, Am J Phys 32, 16 (1964), p35, republished in A P French, Special Relativity, ISBN 0177710756
1950s
Gutkind Letter (3 January 1954), [Childish superstition: Einstein's letter makes view of religion relatively clear, The Guardian, 13 May 2008, http://www.guardian.co.uk/science/2008/may/12/peopleinscience.religion]
1950s
Source: Attributed in posthumous publications, Einstein and the Poet (1983), p. 139
1940s, The World As I See It (1949)
Variant transcription from "Death of a Genius" in Life Magazine: "Certainly there are things worth believing. I believe in the brotherhood of man and the uniqueness of the individual. But if you ask me to prove what I believe, I can't. You know them to be true but you could spend a whole lifetime without being able to prove them. The mind can proceed only so far upon what it knows and can prove. There comes a point where the mind takes a leap—call it intuition or what you will—and comes out upon a higher plane of knowledge, but can never prove how it got there. All great discoveries have involved such a leap."
Unsourced variant: "The intellect has little to do on the road to discovery. There comes a leap in consciousness, call it intuition or what you will, and the solution comes to you and you do not know how or why. All great discoveries are made in this way." The earliest published version of this variant appears to be The Human Side of Scientists by Ralph Edward Oesper (1975), p. 58 http://books.google.com/books?id=-J0cAQAAIAAJ&q=%22solution+comes+to+you+and+you+do+not+know%22&dq=%22solution+comes+to+you+and+you+do+not+know%22&hl=en, but no source is provided, and the similarity to the "Life Magazine" quote above suggests it's likely a misquote.
Source: Attributed in posthumous publications, Einstein and the Poet (1983), p. 136
Source: Attributed in posthumous publications, Einstein and the Poet (1983), p. 10
Found anonymously in newspaper columns from the early 1920s http://quoteinvestigator.com/2015/12/31/kiss. Originally presented in dialogue format https://www.newspapers.com/clip/5219841/safety_first/: "Dorcas—”Do you ever allow a man to kiss you when you’re out motoring with him? Philippa—"Never, if a man can drive safely while kissing me he’s not giving the kiss the attention it deserves."
It does not seem to have been attributed to Einstein until the 1990s (e.g. here https://groups.google.com/forum/message/raw?msg=alt.freemasonry/YILn0A-U_WM/f1Grm2akU-4J).
Misattributed
Attributed without source to Einstein in Mieczyslaw Taube, Evolution of Matter and Energy on a Cosmic and Planetary Scale (1985), page 1
Disputed
Variant: Nature shows us only the tail of the lion. But I do not doubt that the lion belongs to it even though he cannot at once reveal himself because of his enormous size.
As quoted by Abraham Pais in Subtle is the Lord:The Science and Life of Albert Einstein (1982), p. 235 ISBN 0-192-80672-6
Source: Letter to Heinrich Zangger (10 March 1914), quoted in The Curious History of Relativity by Jean Eisenstaedt (2006), p. 126 http://books.google.com/books?id=d2bnXTOtCD8C&lpg=PP1&pg=PA126#v=onepage&q&f=false.
Source: Attributed in posthumous publications, Einstein's God (1997), p. 98
"Only Then Shall We Find Courage", New York Times Magazine (23 June 1946).
1940s
In response to not knowing the speed of sound as included in the Edison Test: New York Times (18 May 1921); Einstein: His Life and Times (1947) Philipp Frank, p. 185; Einstein, A Life (1996) by Denis Brian, p. 129; "Einstein Due Today" (February 2005) edited by József Illy, Manuscript 25-32 of the Einstein Paper Project; all previous sources as per Einstein His Life and Universe (2007) by Walter Isaacson, p. 299
Unsourced variants: "I never commit to memory anything that can easily be looked up in a book" and "Never memorize what you can look up in books." (The second version is found in "Recording the Experience" (10 June 2004) at The Library of Congress http://www.loc.gov/exhibits/world/world-record.html, but no citation to Einstein's writings is given).
1920s
In response to statement "You once told me that progress is made only by intuition, and not by the accumulation of knowledge."
Variant transcription from "Death of a Genius" in Life Magazine: "It is not quite so simple. Knowledge is necessary too. A child with great intuition could not grow up to become something worthwhile in life without some knowledge. However there comes a point in everyone's life where only intuition can make the leap ahead, without knowing precisely how.":
Source: Attributed in posthumous publications, Einstein and the Poet (1983), p. 137
Letter to Dr. H. L. Gordon (May 3, 1949 - AEA 58-217) as quoted in Einstein: His Life and Universe (2007) by Walter Isaacson ISBN 9780743264730
1940s
1940s, Religion and Science: Irreconcilable? (1948)
Unser ganzer gepriesener Fortschritt der Technik, überhaupt die Civilisation, ist der Axt in der Hand des pathologischen Verbrechers vergleichbar.
Letter to Heinrich Zangger (1917), as quoted in A Sense of the Mysterious: Science and the Human Spirit by Alan Lightman (2005), p. 110 http://books.google.com/books?id=-yo_gVxMs6MC&lpg=PP1&pg=PA110#v=onepage&q&f=false, and in Albert Einstein: A Biography by Albrecht Fölsing (1997), p. 399 http://books.google.com/books?id=Kmm0foYfvQAC&q=%22compared+to+an+axe%22#search_anchor
Sometimes paraphrased as "Technological progress is like an axe in the hands of a pathological criminal."
1910s
“Anonymity is no excuse for stupidity.”
c. 1948, p. 54
Attributed in posthumous publications, Albert Einstein: The Human Side (1979)
Liebe Mutter! Heute eine freudige Nachricht. H. A. Lorentz hat mir telegraphiert, dass die englischen Expeditionen die Lichtablenkung an der Sonne wirklich bewiesen haben.
Postcard to his mother Pauline Einstein (1919)
1910s
Letter (30 July 1947), p. 46
Attributed in posthumous publications, Albert Einstein: The Human Side (1979)
Quoted by Otto Stern, a colleague of Einstein in Zurich from 1912 to 1914, in a 1962 oral history interview http://www.aip.org/history/ohilist/4904.html with Thomas S. Kuhn
Attributed in posthumous publications
1940s, Science and Religion (1941)
Comment made after a six-week trip to Japan in November-December 1922, published in Kaizo 5, no. 1 (January 1923), 339. Einstein Archive 36-477.1. Appears in The New Quotable Einstein by Alice Calaprice (2005), p. 269
1920s
1920s, Sidelights on Relativity (1922)
Source: Attributed in posthumous publications, Einstein and the Poet (1983), p. 117
Attributed to Einstein in Carl Seelig's Albert Einstein: A Documentary Biography (1956), p. 80 http://books.google.com/books?id=VCbPAAAAMAAJ&q=%22blind+beetle%22#search_anchor. Said to have been a comment he made to his son Eduard when Eduard asked him, at age 9, "Why are you actually so famous, papa?"
Attributed in posthumous publications
"The Fundamentals of Theoretical Physics," (1940) as quoted in Out of My Later Years (1976)
1940s
Statement on the occasion of Gandhi's 70th birthday (1939) Einstein archive 32-601, published in Out of My Later Years http://books.google.com/books?id=Q1UxYzuI2oQC&pg=PA240&lpg=PA240&dq=einstein+%22out+of+my+later+years%22+%22will+scarce+believe%22&source=web&ots=xRZlwUOcEY&sig=0oe_RZgwXaNYtrIGz-XDqmfWna0 (1950).
1930s
Variant: Generations to come, it may be, will scarcely believe that such a one as this ever in flesh and blood walked upon this earth.
The earliest published source located on Google Books attributing this to Einstein is the 2000 book The Internet Handbook for Writers, Researchers, and Journalists by Mary McGuire, p. 14 http://books.google.com/books?id=Sb-v0K2EkNAC&q=einstein#search_anchor. It was attributed to him on the internet before that, as in this post from 1997 http://groups.google.com/group/comp.graphics.apps.lightwave/msg/d13c55cc4cca4867?hl=en. Variants of the quote can be found well before this however, as in the 1989 book Urban Surface Water Management by S. G. Walesh, which on p. 315 http://books.google.com/books?id=-LcZUPtDykQC&q=%22beyond+imagination%22#v=snippet&q=%22beyond%20imagination%22&f=false contains the statement (said to have been 'stated anonymously'): "The computer is incredibly fast, accurate, and stupid. Man is unbelievably slow, inaccurate, and brilliant. The marriage of the two is a challenge and opportunity beyond imagination." Even earlier, the article "A Paper Industry Application of Systems Engineering and Direct Digital Control" http://books.google.com/books?id=A-YpAQAAIAAJ&q=%22and+direct+digital+control%22#search_anchor by H. D. Couture, Jr. and M. A. Keyes, which appears in the 1969 Advances in Instrumentation: Vol. 24, Part 4, has a statement on this page http://books.google.com/books?id=A-YpAQAAIAAJ&q=%22Computers+are+incredibly+fast%2C+accurate+and+stupid%22#search_anchor which uses phrasing similar to the supposed Einstein quote in describing computers and people: "Computers are incredibly fast, accurate, and stupid. On the other hand, a well trained operator as compared with a computer is incredibly slow, inaccurate and brilliant." Variants with slightly different wording can be found earlier than 1969, as in this April 1968 article http://journals.lww.com/joem/Citation/1968/04000/Fast,_Accurate_and_Stupid.10.aspx. The earliest source located, and most likely the origin of this saying, is an article titled "Problems, Too, Have Problems" by John Pfeiffer, which appeared in the October 1961 issue of Fortune magazine. As quoted here http://books.google.com/books?id=TwwQAAAAIAAJ&q=%22Man+is+a+slow%2C+sloppy%2C+and+brilliant+thinker%3B+computers+are+fast%2C+accurate%2C+and+stupid%22#search_anchor, Pfeiffer's article contained the line "Man is a slow, sloppy, and brilliant thinker; computers are fast, accurate, and stupid."
Misattributed
“Contempt prior to investigation is what enslaves a mind to Ignorance.”
This or similar statements are more often misattributed to Herbert Spencer, but the source of the phrase "contempt prior to investigation" seems to have been William Paley, A View of the Evidences of Christianity (1794): "The infidelity of the Gentile world, and that more especially of men of rank and learning in it, is resolved into a principle which, in my judgment, will account for the inefficacy of any argument, or any evidence whatever, viz. contempt prior to examination."
Misattributed
1940s, "Autobiographical Notes" (1949)
19 June 51, p. 34
Attributed in posthumous publications, Albert Einstein: The Human Side (1979)