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Who said: “As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality.”
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Home > Category Index for Science Quotations > Category Index H > Category: Hour

Hour Quotes (27 quotes)

A man in twenty-four hours converts as much as seven ounces of carbon into carbonic acid; a milch cow will convert seventy ounces, and a horse seventy-nine ounces, solely by the act of respiration. That is, the horse in twenty-four hours burns seventy-nine ounces of charcoal, or carbon, in his organs of respiration to supply his natural warmth in that time ..., not in a free state, but in a state of combination.
In A Course of Six Lectures on the Chemical History of a Candle (1861), 117.
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A man that is young in years may be old in hours, if he has lost no time.
‘Of Youth and Age’, Essays.
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Absolute, true, and mathematical time, in and of itself and of its own nature, without reference to anything external, flows uniformly and by another name is called duration. Relative, apparent, and common time is any sensible and external measure (precise or imprecise) of duration by means of motion; such as a measure—for example, an hour, a day, a month, a year—is commonly used instead of true time.
The Principia: Mathematical Principles of Natural Philosophy (1687), 3rd edition (1726), trans. I. Bernard Cohen and Anne Whitman (1999), Definitions, Scholium, 408.
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All things on the earth are the result of chemical combination. The operation by which the commingling of molecules and the interchange of atoms take place we can imitate in our laboratories; but in nature they proceed by slow degrees, and, in general, in our hands they are distinguished by suddenness of action. In nature chemical power is distributed over a long period of time, and the process of change is scarcely to be observed. By acts we concentrate chemical force, and expend it in producing a change which occupies but a few hours at most.
In chapter 'Chemical Forces', The Poetry of Science: Or, Studies of the Physical Phenomena of Nature (1848), 235-236. Charles Dicken used this quote, with his own sub-head of 'Relative Importance Of Time To Man And Nature', to conclude his review of the book, published in The Examiner (1848).
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An extra yawn one morning in the springtime, an extra snooze one night in the autumn is all that we ask in return for dazzling gifts. We borrow an hour one night in April; we pay it back with golden interest five months later.
As quoted in David Prerau, Seize the Daylight: The Curious And Contentious Story of Daylight (2006).
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Leon M. Lederman quote: During an intense period of lab work, the outside world vanishes and the obsession is total
Background: Michael Faraday in his laboratory at the Royal Institution. (source)
During an intense period of lab work, the outside world vanishes and the obsession is total. Sleep is when you can curl up on the accelerator floor for an hour.
In Leon Lederman and Dick Teresi, The God Particle: If the Universe is the Answer, What is the Question (1993), 14-15.
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Every hour a scientist spends trying to raise funds is an hour lost from important thought and research.
Epigraph in Isaac Asimov’s Book of Science and Nature Quotations (1988), 287.
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First, it must be a pleasure to study the human body the most miraculous masterpiece of nature and to learn about the smallest vessel and the smallest fiber. But second and most important, the medical profession gives the opportunity to alleviate the troubles of the body, to ease the pain, to console a person who is in distress, and to lighten the hour of death of many a sufferer.
Reasons for his choice of medicine as a career, from essay written during his last year in the Gymnasium (high school). As quoted in Leslie Dunn, Rudolf Virchow: Now You Know His Name (2012), 8-9.
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Geology ... offers always some material for observation. ... [When] spring and summer come round, how easily may the hammer be buckled round the waist, and the student emerge from the dust of town into the joyous air of the country, for a few delightful hours among the rocks.
In The Story of a Boulder: or, Gleanings from the Note-book of a Field Geologist (1858), viii.
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I can assure you, reader, that in a very few hours, even during the first day, you will learn more natural philosophy about things contained in this book, than you could learn in fifty years by reading the theories and opinions of the ancient philosophers. Enemies of science will scoff at the astrologers: saying, where is the ladder on which they have climbed to heaven, to know the foundation of the stars? But in this respect I am exempt from such scoffing; for in proving my written reason, I satisfy sight, hearing, and touch: for this reason, defamers will have no power over me: as you will see when you come to see me in my little Academy.
The Admirable Discourses (1580), trans. Aurele La Rocque (1957), 27.
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I don't mind going back to daylight saving time. With inflation, the hour will be the only thing I've saved all year.
In Gene Perret and Terry Martin, Hilarious Roasts, Toasts & One-Liners (2004), 360.
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I had a dislike for [mathematics], and ... was hopelessly short in algebra. ... [One extraordinary teacher of mathematics] got the whole year's course into me in exactly six [after-school] lessons of half an hour each. And how? More accurately, why? Simply because he was an algebra fanatic—because he believed that algebra was not only a science of the utmost importance, but also one of the greatest fascination. ... [H]e convinced me in twenty minutes that ignorance of algebra was as calamitous, socially and intellectually, as ignorance of table manners—That acquiring its elements was as necessary as washing behind the ears. So I fell upon the book and gulped it voraciously. ... To this day I comprehend the binomial theorem.
In Prejudices: third series (1922), 261-262.
For a longer excerpt, see H. L. Mencken's Recollections of School Algebra.
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I learned this, at least, by my experiment: that if one advances confidently in the direction of his dreams, and endeavors to live the life which he has imagined, he will meet with a success unexpected in common hours.
In Walden: or, Life in the Woods (1854, 1893), 496.
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I saw Eternity the other night,
Like a great Ring of pure and endless light,
All calm, as it was bright;
And round beneath it,
Time, in hours, days, years,
Driv’n by the spheres
Like a vast shadow mov’d; in which the world
And all her train were hurl’d.
In 'The World', in Silex Scintillans (1650), 91.
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If a photographic plate under the center of a lens focused on the heavens is exposed for hours, it comes to reveal stars so far away that even the most powerful telescopes fail to reveal them to the naked eye. In a similar way, time and concentration allow the intellect to perceive a ray of light in the darkness of the most complex problem.
From Reglas y Consejos sobre Investigacíon Cientifica: Los tónicos de la voluntad. (1897), as translated by Neely and Larry W. Swanson, in Advice for a Young Investigator (1999), 34.
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It seems very strange … that in the course of the world's history so obvious an improvement should never have been adopted. … The next generation of Britishers would be the better for having had this extra hour of daylight in their childhood.
In Report, and Special Report, from the Select Committee on the Daylight Saving Bill: Minutes of Evidence (1908), 116.
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It took Galileo 16 years to master the universe. You have one night. It seems unfair. The genius had all that time. While you have a few short hours to learn sun spots from your satellites before the dreaded astronomy exam. On the other hand, Vivarin [caffeine tablets] help you keep awake and mentally alert… So even when the subject matter’s dull, your mind will remain razor sharp. If Galileo had used Vivarin, maybe he could have mastered the solar system faster, too.
Advertisement by Beecham for Vivarin, student newspaper, Columbia Daily Spectator (1 Dec 1988), Vol. 112, No. 186, 5.
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It's important to always bear in mind that life occurs in historical time. Everyone in every culture lives in some sort of historical time, though it might not be perceived in the same way an outside observer sees it. It's an interesting question, “When is now?” “Now” can be drawn from some point like this hour, this day, this month, this lifetime, or this generation. “Now” can also have occurred centuries ago; things like unfair treaties, the Trail of Tears, and the Black Hawk War, for instance, remain part of the “Now” from which many Native Americans view their place in time today. Human beings respond today to people and events that actually occurred hundreds or even thousands of years ago. Ethnohistorians have played a major role in showing how now is a social concept of time, and that time is part of all social life. I can only hope that their work will further the understanding that the study of social life is a study of change over time.
From Robert S. Grumet, 'An Interview with Anthony F. C. Wallace', Ethnohistory (Winter 1998), 45, No. 1, 127.
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May the Gods confound that man who first disclosed the hours, and who first, in fact, erected a sun-dial here; who, for wretched me, minced the day up into pieces. For when I was a boy, this stomach was the sun-dial, one much better and truer than all of these; when that used to warn me to eat. Except when there was nothing to eat. Now, even when there is something to eat, it’s not eaten, unless the sun chooses; and to such a degree now, in fact, is the city filled with sun-dials, that the greater part of the people are creeping along the streets shrunk up with famine.
Plautus
A fragment, preserved in the works of Aulus Gellius, as translated by Henry Thomas Riley, in The Comedies of Plautus (1890), Vol. 2, 517.
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On Breaking Habits. To begin knocking off the habit in the evening, then the afternoon as well and, finally, the morning too is better than to begin cutting it off in the morning and then go on to the afternoon and evening. I speak from experience as regards smoking and can say that when one comes to within an hour or two of smoke-time one begins to be impatient for it, whereas there will be no impatience after the time for knocking off has been confirmed as a habit.
Samuel Butler, Henry Festing Jones (ed.), The Note-Books of Samuel Butler (1917), 220.
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The hours of Folly are measured by the clock, but of Wisdom no clock can measure.
In 'Proverbs', The Poems: With Specimens of the Prose Writings of William Blake (1885), 279.
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The manner of Demoivre's death has a certain interest for psychologists. Shortly before it, he declared that it was necessary for him to sleep some ten minutes or a quarter of an hour longer each day than the preceding one: the day after he had thus reached a total of something over twenty-three hours he slept up to the limit of twenty-four hours, and then died in his sleep.
History of Mathematics (3rd Ed., 1901), 394.
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Those who judge of a work by rule are in regard to others as those who have a watch are in regard to others. One says, “It is two hours ago”; the other says, “It is only three-quarters of an hour.” I look at my watch, and say to the one, “You are weary,” and to the other, “Time gallops with you”; for it is only an hour and a half ago, and I laugh at those who tell me that time goes slowly with me, and that I judge by imagination. They do not know that I judge by my watch.
In Pascal’s Pensées (1958), 3-4.
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To me every hour of light and dark is a miracle. Every cubic inch of space is a miracle.
In poem, 'Miracles', Leaves of Grass (1867), 336.
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To see a World in a grain of Sand,
And a Heaven in a Wild Flower,
Hold Infinity in the palm of your hand,
And Eternity in an hour.
William Blake and Alexander Gilchrist (ed.), Life of William Blake: with selections from his poems and other writings (1880), Vol. 2, 107.
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[Benjamin Peirce's] lectures were not easy to follow. They were never carefully prepared. The work with which he rapidly covered the blackboard was very illegible, marred with frequent erasures, and not infrequent mistakes (he worked too fast for accuracy). He was always ready to digress from the straight path and explore some sidetrack that had suddenly attracted his attention, but which was likely to have led nowhere when the college bell announced the close of the hour and we filed out, leaving him abstractedly staring at his work, still with chalk and eraser in his hands, entirely oblivious of his departing class.
Writing as a Professor Emeritus at Harvard University, a former student of Peirce, in 'Benjamin Peirce: II. Reminiscences', The American Mathematical Monthly (Jan 1925), 32, No. 1, 6.
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’Tis the witching hour of night,
Orbed is the moon and bright.
And the stars they glisten, glisten,
Seeming with bright eyes to listen-
For what listen they?
From poem 'Prophecy', collected in The Complete Works of John Keats (1818). Vol. 2, 239.
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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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Benjamin Franklin
Robert Oppenheimer
Robert Hooke
Charles Kettering
- 20 -
Carl Sagan
James Maxwell
Marie Curie
Rene Descartes
Francis Crick
Hippocrates
Michael Faraday
Srinivasa Ramanujan
Francis Bacon
Galileo Galilei
- 10 -
Aristotle
John Watson
Rosalind Franklin
Michio Kaku
Isaac Asimov
Charles Darwin
Sigmund Freud
Albert Einstein
Florence Nightingale
Isaac Newton

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