Galileo Galilei

Quotes

• “A light was kindled amongst the investigators of nature when Galilei let balls of a definite weight roll down the inclin...”
• “[I]t was upon... inequality of motions in point of velocity that Galileo built his theory of flux and reflux of the sea;...”
• “Philosophy is written in that great book which ever lies before our eyes - I mean the universe - but we cannot understan...”
• “Galileo's program offers us a dead world: Out go sight, sound, taste, touch, and smell, and along with them have since g...”
• “Philosophy is written in this grand book - I mean the universe - which stands continually open to our gaze, but it canno...”
• “Philosophy is written in this grand book, which stands continually open before our eyes (I say the 'Universe'), but can ...”
• “The speed of the ball-thanks to opposition from the air-will not go on increasing forever. Rather, what will happen is s...”
• “If I shall have sufficient strength to improve and amplify what was written and published by me up to now about motion b...”
• “Of such are the mathematical sciences alone; that is, geometry and arithmetic, in which the Divine intellect indeed know...”
• “The first mathematician to consider the nature of the resistance of solids to rupture was Galileo. Although he treated s...”
• “I have been in my bed for five weeks, oppressed with weakness and other infirmities from which my age, seventy four year...”
• “If Galileo had been willing to face the idea of a plurality of worlds, instead of resting on that of the Sun as the natu...”
• “Alas! Your dear friend and servant Galileo has been for the last month hopelessly blind; so that this heaven, this earth...”
• “He endeavoured to determine the resistance of a beam, one end of which is built into a wall, when the tendency to break ...”
• “Notes in a copy of Jean-Baptiste Morin's "Famous and ancient problems of the earth's motion or rest, yet to be solved" (...”
• “Loose paraphrase of Salviati on Day 3: "For when the sun draws up some vapors here, or warms a plant there, it draws the...”
• “And yet it moves" or "still it moves" is a comment he is alleged to have made in regard to the Earth after his recantati...”
• “Among all the great men who have philosophized about this remarkable effect, I am more astonished at Kepler than at any ...”
• “We seek not what God could have done but what He has done.… God could have caused birds to fly with bones of solid gold,...”
• “Copernicus never discusses matters of religion or faith, nor does he use argument that depend in any way upon the author...”
• “His brilliant discoveries the man of science regards as his peculiar property; the means by which they were made, and th...”
• “The quote is widely misattributed to Galilei, but is actually from two French scholars, Antoine-Augustin Cournot and Tho...”
• “How do heavy bodies fall? ...Galileo's investigation of dynamics was physical; Aristotle's was metaphysical. But unlike ...”
• “This [experimentation] is the custom-and properly so-in those sciences where mathematical demonstrations are applied to ...”
• “Others before him had asked why heavy bodies fall; now, the homogeneity of the earth with the heavenly bodies having sug...”
• “After the publication of my dialogues, I was summoned to Rome by the Congregation of the holy Office, where, being arriv...”
• “I am certainly interested in a tribunal in which, for having used my reason, I was deemed little less than a heretic. Wh...”
• “Galileo deduced the laws of freely falling bodies and the parabolic paths of projectiles, initiating an era of applicati...”
• “What was observed by us in the third place is the nature or matter of the Milky Way itself, which, with the aid of the s...”
• “Conclusions obtained by purely rational processes are, so far as Reality is concerned, entirely empty. It was because he...”
• “Quòd tertio loca à nobis fuit obſeruatum, eſt ipſiuſmet LACTEI Circuli eſſentia, ſeu materies, quam Perſpicilli benefici...”
• “The way in which the persecution of Galileo has been remembered is a tribute to the quiet commencement of the most intim...”
• “Surely it is a great thing to increase the numerous host of fixed stars previously visible to the unaided vision, adding...”
• “It was in Galileo's time that firearms were invented... What is the path of a cannonball? ...Characteristically, Galileo...”
• “I am quite convinced; and, believe me, if I were again beginning my studies, I should follow the advice of Plato and sta...”
• “[I]f Bacon had never lived, the student of nature would have found in the writings and labours of Galileo, not only the ...”
• “David Hilbert, in defense of Galileo's recantation of his discoveries before a tribunal of the Inquisition, as quoted in...”
• “Francis Bacon, Novum Organum (1620) as quoted in The Works of Francis Bacon: Translations of the Philosophical Works (18...”
• “Original text as reproduced in Edward Tufte, Beautiful Evidence (Cheshire, Connecticut: Graphics Press LLC, 2006), 101 (...”
• “My dear Kepler, what would you say of the learned here, who, replete with the pertinacity of the asp, have steadfastly r...”
• “To apply oneself to great inventions, starting from the smallest beginnings, is no task for ordinary minds; to divine th...”
• “Letter to Élie Diodati (2 January 1638), as translated in The Private Life of Galileo: Compiled primarily from his corre...”
• “Third letter on sunspots (December 1612) to Mark Wesler (1558 - 1614), as quoted in Discoveries and Opinions of Galileo ...”
• “Letter to Élie Diodati (4 July 1637), as translated in The Private Life of Galileo: Compiled primarily from his correspo...”
• “Part of this passage, in Italian, I detrattori della corruptibilitá meriterebber d'esser cangiati in statue., has also b...”
• “I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us...”
• “Variant translation: I would say here something that was heard from an ecclesiastic of the most eminent degree: "That th...”
• “I would say here something that was heard from an ecclesiastic of the most eminent degree [probably Caesar Baronius]: "T...”
• “Immanuel Kant, Preface, Critique of Pure Reason (1787) 2nd edition, as quoted by , "Francis Bacon and Galileo Galilei" (...”
• “Proposition I. Theorem I: When a projectile is carried in motion compounded from equable horizontal and from naturally a...”