Galileo Galilei Quotes & Wallpapers

Galileo Galilei
Total Quotes: 151


The surface of the Moon is not smooth, uniform, and precisely spherical as a great number of philosophers believe it to be, but is uneven, rough, and full of cavities and prominences, being not unlike the face of the Earth, relieved by chains of mountains and deep valleys. Galileo Galilei
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I therefore concluded, and decided unhesitatingly, that there are three stars in the heavens moving about Jupiter, as Venus and Mercury about the Sun; which at length was established as clear as daylight by numerous other observations. Referring to his pioneering telescope observations. Galileo Galilei
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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
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I have been judged vehemently suspect of heresy, that is, of having held and believed that the sun in the centre of the universe and immoveable, and that the earth is not at the center of same, and that it does move. Wishing however, to remove from the minds of your Eminences and all faithful Christians this vehement suspicion reasonably conceived against me, I abjure with a sincere heart and unfeigned faith, I curse and detest the said errors and heresies, and generally all and every error, heresy, and sect contrary to the Holy Catholic Church. (Quoted in Shea and Artigas 194) Galileo Galilei
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In the sciences, the authority of thousands of opinions is not worth as much as one tiny spark of reason in an individual man. Galileo Galilei
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It is surely harmful to souls to make it a heresy to believe what is proved. Galileo Galilei
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Nature's great book is written in mathematics. Galileo Galilei
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Nature...does not act by means of many things when it can do so by means of a few. Galileo Galilei
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I am certainly interested in a tribunal in which, for having used my reason, I was deemed little less than a heretic. Who knows but men will reduce me from the profession of a philosopher to that of historian of the Inquisition! Galileo Galilei
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Scripture is a book about going to Heaven. It's not a book about how the heavens go. Galileo Galilei
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One can understand nature only when one has learned the language and the signs in which it speaks to us; but this language is mathematics and these signs are methematical figures. Galileo Galilei
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Science proceeds more by what it has learned to ignore than what it takes into account. Galileo Galilei
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That sculpture is more admirable than painting for the reason that it contains relief and painting does not is completely false. ... Rather, how much more admirable the painting must be considered, if having no relief at all, it appears to have as much as sculpture! Galileo Galilei
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See now the power of truth; the same experiment which at first glance seemed to show one thing, when more carefully examined, assures us of the contrary. Galileo Galilei
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It seems to me that it was well said by Madama Serenissima, and insisted on by your reverence, that the Holy Scripture cannot err, and that the decrees therein contained are absolutely true and inviolable. But I should have in your place added that, though Scripture cannot err, its expounders and interpreters are liable to err in many ways; and one error in particular would be most grave and most frequent, if we always stopped short at the literal signification of the words. Galileo Galilei
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Philosophy itself cannot but benefit from our disputes, for if our conceptions prove true, new achievements will be made; if false, their refutation will further confirm the original doctrines. Galileo Galilei
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Mathematics is the language with which God has written the universe. Galileo Galilei
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Wine is sunlight, held together by water. Galileo Galilei
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We cannot teach people anything; we can only help them discover it within themselves. Galileo Galilei
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If I were again beginning my studies, I would follow the advice of Plato and start with mathematics. Galileo Galilei
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The Milky Way is nothing else but a mass of innumerable stars planted together in clusters. Galileo Galilei
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We must say that there are as many squares as there are numbers. Galileo Galilei
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You can't teach anybody anything, only make them realize the answers are already inside them. Galileo Galilei
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The book of nature is written in the language of mathematics. Galileo Galilei
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Nature is written in mathematical language. Galileo Galilei
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The doctrine that the earth is neither the center of the universe nor immovable, but moves even with a daily rotation, is absurd, and both philosophically and theologically false, and at the least an error of faith. Galileo Galilei
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Light held together by moisture. Galileo Galilei
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Mathematics is the language in which God has written the universe. Galileo Galilei
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And who can doubt that it will lead to the worst disorders when minds created free by God are compelled to submit slavishly to an outside will? When we are told to deny our senses and subject them to the will of others? Galileo Galilei
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The deeper I go in considering the vanities of popular reasoning, the lighter and more foolish I find them. What greater stupidity can be imagined than that of calling jewels, silver, and gold "precious," and earth and soil "base"? Galileo Galilei
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Philosophy is written in that great book which ever lies before our eyes - I mean the universe - but we cannot understand it if we do not first learn the language and grasp the symbols, in which it is written Galileo Galilei
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There are those who reason well, but they are greatly outnumbered by those who reason badly. Galileo Galilei
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The Bible shows the way to go to heaven, not the way the heavens go. Galileo Galilei
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And yet it moves. Galileo Galilei
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Surely it is a great thing to increase the numerous host of fixed stars previously visible to the unaided vision, adding countless more which have never before been seen, exposing these plainly to the eye in numbers ten times exceeding the old and familiar stars. Galileo Galilei
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Long experience has taught me this about the status of mankind with regard to matters requiring thought: the less people know and understand about them, the more positively they attempt to argue concerning them, while on the other hand to know and understand a multitude of things renders men cautious in passing judgement upon anything new. Galileo Galilei
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I abjure with a sincere heart and unfeigned faith, I curse and detest the said errors and heresies, and generally all and every error and sect contrary to the Holy Catholic Church. Galileo Galilei
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Nothing can be taught to a man, only it's possibly to help him to discover it inside. Galileo Galilei
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The theologians also should not be irritated. For if they find that this opinion is false, then they would be free to condemn it; and if they discover that it is true, they ought to thank those who have opened the way to finding the true sense of the Scriptures and who have prevented them from falling into the grave scandal of condemning a true proposition. Galileo Galilei
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The laws of Nature are written in the language of mathematics...the symbols are triangles, circles and other geometrical figures, without whose help it is impossible to comprehend a single word. Galileo Galilei
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Oh, my dear Kepler, how I wish that we could have one hearty laugh together. Here, at Padua, is the principal professor of philosophy, whom I have repeatedly and urgently requested to look at the moon and planets through my glass, [telescope] which he pertinaciously refuses to do. Why are you not here? what shouts of laughter we should have at this glorious folly! and to hear the professor of philosophy at Pisa laboring before the grand duke with logical arguments, as if with magical incantations, to charm the new planets out of the sky. Galileo Galilei
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But of all other stupendous inventions, what sublimity of mind must have been his who conceived how to communicate his most secret thoughts to any other person, though very far distant either in time or place? And with no greater difficulty than the various arrangement of two dozen little signs upon paper? Let this be the seal of all the admirable inventions of man. Galileo Galilei
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I would say here something that was heard from an ecclesiastic of the most eminent degree: The intention of the Holy Spirit is to teach us how one goes to heaven, not how the heavens go. Galileo Galilei
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Take note, theologians, that in your desire to make matters of faith out of propositions relating to the fixity of sun and earth you run the risk of eventually having to condemn as heretics those who would declare the earth to stand still and the sun to change position-eventually, I say, at such a time as it might be physically or logically proved that the earth moves and the sun stands still. Galileo Galilei
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With regard to matters requiring thought: the less people know and understand about them, the more positively they attempt to argue concerning them. Galileo Galilei
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Philosophy [nature] is written in that great book which ever is before our eyes - I mean the universe - but we cannot understand it if we do not first learn the language and grasp the symbols in which it is written. The book is written in mathematical language, and the symbols are triangles, circles and other geometrical figures, without whose help it is impossible to comprehend a single word of it; without which one wanders in vain through a dark labyrinth. Galileo Galilei
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...nothing physical which sense-experience sets before our eyes, or which necessary demonstrations prove to us, ought to be called into question (much less condemned) upon the testimony of biblical passages. Galileo Galilei
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Nothing occurs contrary to nature except the impossible, and that never occurs. Galileo Galilei
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The laws of nature are written by the hand of God in the language of mathematics. Galileo Galilei
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See now the power of truth. Galileo Galilei
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did not ignore the Bible, but he knew very well that if his doctrine were proved, then it could not contradict the Scriptures when they were rightly understood. Galileo Galilei
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I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to forgo their use and by some other means to give us knowledge which we can attain by them. Galileo Galilei
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You cannot teach a man anything; you can only help him find it within himself. Galileo Galilei
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The greatest wisdom is to get to know oneself. Galileo Galilei
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Who would dare assert that we know all there is to be known? Galileo Galilei
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Nonetheless, it moves. Galileo Galilei
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It is a beautiful and delightful sight to behold the body of the Moon. Galileo Galilei
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You cannot teach a man anything, you can only help him find it within himself. Galileo Galilei
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I cannot but be astonished that Sarsi should persist in trying to prove by means of witnesses something that I may see for myself at any time by means of experiment. Witnesses are examined in doutbful matters which are past and transient, not in those which are actual and present. A judge must seek by means of witnesses to determine whether Peter injured John last night, but not whether John was injured, since the judge can see that for himself. Galileo Galilei
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But, because my private lectures and domestic pupils are a great hinderance and intteruption of my studies, I wish to live entirely exempt from the former, and in great measure from the latter. ... in short, I should wish to gain my bread from my writings. Galileo Galilei
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The Grand Duke [of Tuscany] ...after observing the Medicaean plants several times with me ... has now invited me to attach myself to him with the annual salary of one thousand florins, and with the title of Philosopher and Principal Mathematicial to His Highness; without the duties of office to perform, but with the most complete leisure; so that I can complete my Treatises... Galileo Galilei
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The number of fixed stars which observers have been able to see without artificial powers of sight up to this day can be counted. It is therefore decidedly a great feat to add to their number, and to set distinctly before the eyes other stars in myriads, which have never been seen before, and which surpass the old, previously known stars in number more than ten times. Galileo Galilei
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Spots are on the surface of the solar body where they are produced and also dissolved, some in shorter and others in longer periods. They are carried around the Sun; an important occurrence in itself. Galileo Galilei
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What ever the course of our lives, we should recieve them as the highest gift from the hand of God, in which equally reposed the power to do nothing whatever for us. Indeed, we should accept misfortune not only in thanks, but in infinite gratitude to Providence, which by such means detaches us from an excessive love for Earthly things and elevates our minds to the celestial and divine. Galileo Galilei
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Infinities and indivisibles transcend our finite understanding, the former on account of their magnitude, the latter because of their smallness; Imagine what they are when combined. Galileo Galilei
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Showing a greater fondness for their own opinions than for truth, they sought to deny and disprove the new things which, if they had cared to look for themselves, their own senses would have demonstrated to them. Galileo Galilei
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I believe that the intention of Holy Writ was to persuade men of the truths necessary to salvation; such as neither science nor other means could render credible, but only the voice of the Holy Spirit. Galileo Galilei
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The difficulties in the study of the infinite arise because we attempt, with our finite minds, to discuss the infinite, assigning to it those properties which we give to the finite and limited; but this... is wrong, for we cannot speak of infinite quantities as being the one greater or less than or equal to another. Galileo Galilei
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In time you may discover everything that can be discovered, and still your progress will only be progress away from humanity. The distance between you and them can one day become so great that your joyous cry over some new gain could be answered by an universal shriek of horror. Galileo Galilei
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I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use. Galileo Galilei
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