Insofar as statements of mathematics refer to reality, they are uncertain, and insofar as they are certain, they do not refer to reality.
[Insofern sich die Sätze der Mathematik auf die Wirklichkeit beziehen, sind sie nicht sicher, und insofern sie sicher sind, beziehen sie sich nicht auf die Wirklichkeit.]
Albert Einstein (1879-1955) German-American physicist
“Geometry and Experience [Geometrie und Erfahrung],” lecture (27 Jan 1921)
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Sometimes given as "Insofar as the statements of geometry speak about reality, they are not certain, and in so far as they are certain, they do not speak about reality. [Sofern die Sätze der Geometrie streng gültig sind, beziehen sie sich nicht auf de Wirklichkeit; sofern sie sich auf dei Wirklichkeit beziehen, sind sie nicht streng gültig.]" -- this version was popularized by Karl Popper, but it was from a misquote by Morris Schlick.
Subtle is God, but malicious He is not.
[Raffiniert ist der Herr Gott, aber boshaft ist er nicht.]
The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery every day.
Albert Einstein (1879-1955) German-American physicist
Memoirs of William Miller, quoted in Life (2 May 1955)
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Don’t join the book burners. Don’t think you are going to conceal thoughts by concealing evidence that they ever existed. Don’t be afraid to go in your library and read every book, as long as that document does not offend your own ideas of decency. That should be the only censorship.
People talk about the middle of the road as though it were unacceptable. Actually, all human problems, excepting morals, come into the gray areas. Things are not all black and white. There have to be compromises. The middle of the road is all of the usable surface. The extremes, right and left, are in the gutters.
Dwight David Eisenhower (1890-1969) American general, US President (1953-61)
Note (Nov 1963)
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The earliest reference I could find was second-hand, in William Safire, The New Language of Politics, "middle of the road" (1968) (later published as Safire's Political Dictionary, and including the entry through the 2008 edition).
For the growing good of the world is partly dependent on unhistoric acts; and that things are not so ill with you and me as they might have been, is half owing to the number who lived faithfully a hidden life, and rest in unvisited tombs.
Blessed is the man who, having nothing to say, abstains from giving us wordy evidence of the fact.
George Eliot (1819-1880) English novelist [pseud. of Mary Ann Evans]
The Impressions of Theophrastus Such, ch. 4 (1879)
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No! I am not Prince Hamlet, nor was meant to be;
Am an attendant lord, one that will do
To swell a progress, start a scene or two,
Advise the prince; no doubt, an easy tool,
Deferential, glad to be of use,
Politic, cautious, and meticulous;
Full of high sentence, but a bit obtuse;
At times, indeed, almost ridiculous —
Almost, at times, the Fool.
All great masters are chiefly distinguished by the power of adding a second, a third, and perhaps a fourth step in a continuous line. Many a man had taken the first step. With every additional step you enhance immensely the value of your first.
Ralph Waldo Emerson (1803-1882) American essayist, lecturer, poet
“Powers and Laws of Thought,” Natural History of Intellect, Lecture 1, Harvard (1870, Spring)
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Our debt to tradition through reading and conversation is so massive, our protest or private addition so rare and insignificant, — and this commonly on the ground of other reading or hearing, — that, in a large sense, one would say there is no pure originality. All minds quote. Old and new make the warp and woof of every moment. There is no thread that is not a twist of these two strands. By necessity, by proclivity, and by delight, we all quote.
Ralph Waldo Emerson (1803-1882) American essayist, lecturer, poet
“Quotation and Originality,” Letters and Social Aims (1876)
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Shallow men believe in luck, believe in circumstances — it was somebody’s name, or he happened to be there at the time, or it was so then, and another day would have been otherwise. Strong men believe in cause and effect.
Ralph Waldo Emerson (1803-1882) American essayist, lecturer, poet
“Worship,” The Conduct of Life, ch. 6 (1860)
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We aim above the mark to hit the mark.
Ralph Waldo Emerson (1803-1882) American essayist, lecturer, poet
“Nature,” Essays: Second Series (1844)
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It is one of the most beautiful compensations of this life that no man can sincerely try to help another without helping himself.
Charles Dudley Warner (1829–1900) American essayist and novelist
Backlog Studies, Fifth Study, sec. 3 (1872)
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Originally published in Scribner's Monthly (Apr 1872). Frequently misattributed to Ralph Waldo Emerson.
The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.
Ralph Waldo Emerson (1803-1882) American essayist, lecturer, poet
(Misattributed)
Though widely credited to Emerson, this appears to be a misattributed variation of a Leo Rosten quotation. More discussion of the connection here: The Purpose of Life Is Not To Be Happy But To Matter – Quote Investigator.
Every observation of history inspires a confidence that we shall not go far wrong; that things will mend.
Ralph Waldo Emerson (1803-1882) American essayist, lecturer, poet
“The Young American,” lecture, Mercantile Library Association, Boston (1844-02-07)
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No member of a crew is praised for the rugged individuality of his rowing.
Alfred North Whitehead (1861-1947) English mathematician and philosopher
“Harvard: The Future,” sec. 5, The Atlantic Monthly (Sep 1936)
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Reprinted in Essays in Science and Philosophy, Part 3 (1947). Often misattributed to Ralph Waldo Emerson.
We must trust the perfection of the creation so far, as to believe that whatever curiosity the order of things has awakened in our minds, the order of things can satisfy.
Ralph Waldo Emerson (1803-1882) American essayist, lecturer, poet
“Nature,” Introduction, Nature: Addresses and Lectures (1849)
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The ornament of a house is the friends who frequent it. There is no event greater in life than the appearance of new persons about our hearth, except it be the progress of the character which draws them.
Ralph Waldo Emerson (1803-1882) American essayist, lecturer, poet
“Domestic Life,” Society and Solitude (1870)
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