Kepler Quotes

My dear Kepler, what would you say of the learned here, who, replete with the pertinacity of the asp, have steadfastly refused to cast a glance through the telescope? What shall we make of this? Shall we laugh, or shall we cry? (Galileo Galilei)
A taxonomy of abilities, like a taxonomy anywhere else in science, is apt to strike a certain type of impatient student as a gratuitous orgy of pedantry. Doubtless, compulsions to intellectual tidiness express themselves prematurely at times, and excessively at others, but a good descriptive taxonomy, as Darwin found in developing his theory, and as Newton found in the work of Kepler, is the mother of laws and theories. View quote
Raymond Cattell
The bases of music are rhythm and harmony. Rhythm is ordered recurrence in time... As the planets move around the sun, they repeat their orbits periodically; thus there is already a primitive kind of rhythm in their motion.... Harmony... can be considered a special kind of rhythm.... pure musical tones are produced when the vibrations are... periodic or... repeat themselves regularly in time. Two tones harmonize if their intervals of repetition are in rhythm-or, in mathematical language, if their periods are in proportion. Kepler... in the third book of Harmonice mundi... attempted to make other... related, connections between musical harmony and mathematical proportion. View quote
Frank Wilczek
It took from a hundred to a hundred and fifty or two hundred years for the astronomy of Kepler to become the astronomy of Newton and Laplace], and for the mechanics of [[Galileo to become the mechanics of d'Alembert and Lagrange. On the other hand, less than a century has elapsed between the publication of Adam Smith's work and the contributions of Cournot, Gossen, Jevons, and myself. View quote
Léon Walras
Newton would have been laughed out of the country if Kepler hadn't done the measurement. ... The facts speak for themselves. ... History has shown that you need a little luck - and if you don't have the luck, you're out of luck. View quote
Robert B. Laughlin
Even a statement very close to the periphery can be held true in the face of recalcitrant experience by pleading hallucination or by amending certain statements of the kind called logical laws. Conversely, by the same token, no statement is immune to revision. Revision even of the logical law of the excluded middle has been proposed as a means of simplifying quantum mechanics; and what difference is there in principle between such a shift and the shift whereby Kepler superseded Ptolemy, or Einstein Newton, or Darwin Aristotle? View quote
Willard van Orman Quine
Among all the great men who have philosophized about this remarkable effect, I am more astonished at Kepler than at any other. Despite his open and acute mind, and though he has at his fingertips the motions attributed to the earth, he nevertheless lent his ear and his assent to the moon's dominion over the waters, to occult properties, and to such puerilities. View quote
Galileo Galilei
Copernicus stuck very closely to the facts, but in Kepler I invented freely, and it's a much better book because of that. View quote
John Banville
Well, [Kepler] reminded me of myself – the little man running desperately in circles, trying to find an explanation for the world, for his place in it, to find a plausible system, to account for reality – and never finding it. Finding lots of rules and laws which are very important, but never actually finding his own way into what it is to be in the world – very much an existentialist before his time, I think. View quote
John Banville
After all, who knows what the distant past was like? About Kepler and Copernicus, people often say, You captured the period so well! I always want to ask, How do you know? You weren't there either. View quote
John Banville
[I]magination... is the faculty... the common root from which science and literature... spring and grow and flourish together. ...the great ages of science are the great ages of all the arts... [P]owerful minds have taken fire from one another... without asking... to tie their imagination to falling balls or a haunted island. ...When Galileo was looking through his telescope at the moon, Shakespeare was writing The Tempest and all Europe was in ferment, from Johannes Kepler to Peter Paul Rubens, and from the first table of logarithms by John Napier to the Authorized version of the Bible. (Jacob Bronowski)
When a man counts one, two, three, he is not only doing mathematics, he is on the path to the mysticism of numbers in Pythagoras and Vitruvius and Kepler, to the Trinity and the signs of the Zodiac. View quote
Jacob Bronowski
The next question was - what makes planets go around the sun? At the time of Kepler some people answered this problem by saying that there were angels behind them beating their wings and pushing the planets around an orbit. As you will see, the answer is not very far from the truth. The only difference is that the angels sit in a different direction and their wings push inward. View quote
Richard Feynman
Even when, after centuries of license, the Church reformed its discipline, and, to prove it, burned Giordano Bruno in 1600, besides condemning Galileo in 1630 - as science goes on repeating to us every day - it condemned anarchists, not atheists. None of the astronomers were irreligious men; all of them made a point of magnifying God through his works; a form of science which did their religion no credit. Neither Galileo nor Kepler, neither Spinoza nor Descartes, neither Leibnitz nor Newton, any more than Constantine the Great - if so much - doubted Unity. The utmost range of their heresies reached only its personality. View quote
Henry Adams
We are... bound to attach the greatest importance to the preliminary step taken by Lavoisier, who is even more justly called the father of modern chemistry than Kepler is called the father of modern astronomy. The exact claims of Lavoisier to this important place in the history of chemistry have been variously stated: ...since his time, and greatly through his labours, the quantitative method has been established as the ultimate test of chemical facts; the principle of this method being the rule that in all changes of combination and reaction, the total weight of the various ingredients-be they elementary bodies or compounds-remains unchanged. The science of chemistry was thus established upon an exact, a mathematical basis. By means of this method Lavoisier, utilising and analysing the results gained by himself and others before him, notably those of Priestley, Cavendish, and Black, succeeded in destroying the older theory of combustion, the so-called phlogistic theory. View quote
Antoine Lavoisier
The outlook of a Bruno, a Kepler, or a Galileo is determined by the idea of a comprehensive, all-embracing unity of the physical world. The same law governs the courses of the stars, the falling of stones, and the flight of birds. This homogenization of the physical world with respect to the validity of law deprives the division of physical objects into rigid abstractly defined classes of the critical significance it had for Aristotelian physics, in which membership in a certain conceptual class was considered to determine the physical nature of an object. View quote
Kurt Lewin
No matter where and how far we look, nowhere do we find a contradiction between religion and natural science. On the contrary, we find a complete concordance in the very points of decisive importance. Religion and natural science do not exclude each other, as many contemporaries of ours would believe or fear. They mutually supplement and condition each other. The most immediate proof of the compatibility of religion and natural science, even under the most thorough critical scrutiny, is the historical fact that the very greatest natural scientists of all times-men such as Kepler, Newton, Leibniz-were permeated by a most profound religious attitude. View quote
Max Planck
Your favourite virtue ... Simplicity Your favourite virtue in man ... Strength Your favourite virtue in woman ... Weakness Your chief characteristic ... Singleness of purpose Your idea of happiness ... To fight Your idea of misery ... Submission The vice you excuse most ... Gullibility The vice you detest most ... Servility Your aversion ... Martin Tupper Favourite occupation ... Book-worming Favourite poet ... Shakespeare, Aeschylus, Goethe Favourite prose-writer ... Diderot Favourite hero ... Spartacus, Kepler Favourite heroine ... Gretchen [Heroine of Goethe's Faust] Favourite flower ... Daphne Favourite colour ... Red Favourite name ... Laura, Jenny Favourite dish ... Fish Favourite maxim ... Nihil humani a me alienum puto [Nothing human is alien to me, Terence] Favourite motto ... De omnibus dubitandum [Everything must be doubted]. View quote
Karl Marx
My dear Kepler, what would you say of the learned here, who, replete with the pertinacity of the asp, have steadfastly refused to cast a glance through the telescope? View quote
Galileo Galilei
As a boy Kepler had been captured by a vision of cosmic splendour, a harmony of the worlds which he sought so tirelessly all his life. View quote
Carl Sagan
Let me end with... man's ageless fantasy, to fly to the moon.... Plutarch and Lucian, Ariosto and Ben Jonson wrote about it, before the days of Jules Verne and H. G. Wells and science fiction. The seventeenth century was heady with... fables about voyages to the moon. Kepler wrote one full of deep scientific ideas... wrote... The Discovery of a New World. They did not draw a line between science and fancy... they all tried to guess where... earth's gravity would stop. Only Kepler understood that gravity has no boundary, and put a law to it-... the wrong law. All this was a few years before Isaac Newton was born, and it was all in his head that day in 1666, when he... came to conceive... that the moon is like a ball... thrown so hard that it falls exactly as fast as the horizon... he went on to calculate how long... the distant moon would take to round the earth... [T]he imagination that day chimed with nature, and made a harmony. (Jacob Bronowski)
...from the time of Kepler to that of Newton, and from Newton to Hartley, not only all things in external nature, but the subtlest mysteries of life and organization, and even of the intellect and moral being, were conjured within the magic circle of mathematical formulae. View quote
Samuel Taylor Coleridge
The Perspectiva is a clear and concise summary of the science of light at the time... a popular text on optics until the seventeenth century... used and cited by many medieval and Renaissance scholars, including Leonardo da Vinci and Johannes Kepler. View quote
John Peckham
The allusion to the "puzzling" problem of [the orbit of] Mars shows that Galileo ought not to have been unaware of the great work of Kepler published in 1609: Astronomia nova... in which the first two of Kepler's laws were formulated. Yet he does not mention here at all Kepler's success in solving the problem, nor his laws, nor his name even, which is brought up... only to criticize his belief in the Moon's attraction [effect upon tides], which is quite reasonably presented in the Astronomia nova and founded on astronomical reasons and not on mystical speculations. View quote
Galileo Galilei
As a boy Kepler had been captured by a vision of cosmic splendour, a harmony of the worlds which he sought so tirelessly all his life. Harmony in this world eluded him. His three laws of planetary motion represent, we now know, a real harmony of the worlds, but to Kepler they were only incidental to his quest for a cosmic system based on the Perfect Solids, a system which, it turns out, existed only in his mind. Yet from his work, we have found that scientific laws pervade all of nature, that the same rules apply on Earth as in the skies, that we can find a resonance, a harmony, between the way we think and the way the world works. When he found that his long cherished beliefs did not agree with the most precise observations, he accepted the uncomfortable facts, he preferred the hard truth to his dearest illusions. That is the heart of science. View quote
Carl Sagan