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Galileo Galilei

Galileo Galilei Books

Physicist

Il Saggiatore

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“I esteem myself happy to have as great an ally as you in my search for truth. I will read your work ... all the more willingly because I have for many years been a partisan of the Copernican view because it reveals to me the causes of many natural phenomena that are entirely incomprehensible in the light of the generally accepted hypothesis. To refute the latter I have collected many proofs, but I do not publish them, because I am deterred by the fate of our teacher Copernicus who, although he had won immortal fame with a few, was ridiculed and condemned by countless people (for very great is the number of the stupid). {Letter to fellow revolutionary astronomer Johannes Kepelr}”

TruthScienceAstronomyRidiculeScience Vs ReligionCopernicusKeplerJohannes KeplerNicolaus Copernicus
Book:Frammenti e lettere
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“Philosophy is written in this all-encompassing book that is constantly open to our eyes, that is the universe; but it cannot be understood unless one first learns to understand the language and knows the characters in which it is written. It is written in mathematical language, and its characters are triangles, circles, and other geometrical figures; without these it is humanly impossible to understand a word of it, and one wanders in a dark labyrinth.”

UniverseMathematicsGeometry
Book:Il Saggiatore
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“[...] non è effetto alcuna in natura, per minimo che e' sia, all'intera cognizion del quale possano arrivare i piú specolativi ingegni. Questa cosí vana prosunzione d'intendere il tutto non può aver principio da altro che dal non avere inteso mai nulla, perché, quando altri avesse esperimentato una volta sola a intender perfettamente una sola cosa ed avesse gustato veramente come è fatto il sapere, conoscerebbe come dell'infinità dell'altre conclusioni niuna ne intende.”

TruthUnderstandingHumilityPresumption
Author:Galileo Galilei
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“After an injunction had been judicially intimated to me by this Holy Office, to the effect that I must altogether abandon the false opinion that the sun is the center of the world and immovable, and that the earth is not the center of the world, and moves, and that I must not hold, defend, or teach in any way whatsoever, verbally or in writing, the said false doctrine, and after it had been notified to me that the said doctrine was contrary to Holy Scripture — I wrote and printed a book in which I discuss this new doctrine already condemned, and adduce arguments of great cogency in its favor, without presenting any solution of these, and for this reason I have been pronounced by the Holy Office to be vehemently suspected of heresy, that is to say, of having held and believed that the Sun is the center of the world and immovable, and that the earth is not the center and moves: Therefore, desiring to remove from the minds of your Eminences, and of all faithful Christians, this vehement suspicion, justly conceived against me, with sincere heart and unfeigned faith I abjure, curse, and detest the aforesaid errors and heresies, and generally every other error, heresy, and sect whatsoever contrary to the said Holy Church, and I swear that in the future I will never again say or assert, verbally or in writing, anything that might furnish occasion for a similar suspicion regarding me; but that should I know any heretic, or person suspected of heresy, I will denounce him to this Holy Office, or to the Inquisitor or Ordinary of the place where I may be. Further, I swear and promise to fulfill and observe in their integrity all penances that have been, or that shall be, imposed upon me by this Holy Office. And, in the event of my contravening, any of these my promises and oaths, I submit myself to all the pains and penalties imposed and promulgated in the sacred canons and other constitutions, general and particular, against such delinquents.”

DoctrineCatholic ChurchHeresyScience Vs ReligionThe ChurchPapacyHoly ScriptureFaithful ChristiansRecantationHoly OfficeSacred CanonScience Astronomy
Book:Dialogue Concerning the Two Chief World Systems: Ptolemaic and Copernican
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“Sì perché l'autorità dell'opinione di mille nelle scienze non val per una scintilla di ragione di un solo, sì perché le presenti osservazioni spogliano d'autorità i decreti de' passati scrittori, i quali se vedute l'avessero, avrebbono diversamente determinato. For in the sciences the authority of thousands of opinions is not worth as much as one tiny spark of reason in an individual man. Besides, the modern observations deprive all former writers of any authority, since if they had seen what we see, they would have judged as we judge.”

ReasonScienceOpinionAuthorityJudgmentObservation
Book:Frammenti e lettere
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“I have been in my bed for five weeks, oppressed with weakness and other infirmities from which my age, seventy four years, permits me not to hope release. Added to this (proh dolor! [O misery!]) the sight of my right eye — that eye whose labors (dare I say it) have had such glorious results — is for ever lost. That of the left, which was and is imperfect, is rendered null by continual weeping.”

AgeScienceBlindMisery
Book:Lettere di Galileo Galilei
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“It is very pious to say and prudent to affirm that the holy Bible can never speak untruth -- whenever its true meaning is understood. But I believe nobody will deny that it is often very abstruse, and may say things which are quite different from wha.”

BelieveMayDifferentSpeakI BelieveHolyUnderstoodBibleDenyPiousPrudentHoly BibleUntruthTrue Meaning
Book:Men of physics: Galileo Galilei, his life and his works
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“All truths are easy to understand once they are discovered; the point is to discover them.”

InspirationalTruthScienceEasyUnderstandingTruth IsDiscoveryScientistIntentionPhilosopherCriminalsClarityTelling The TruthDiscoveringTruth Of LifeCriminal MindComputer ProgrammingProgramming LanguagesComputer LanguageConceitedPhilosophy Of ScienceTruth And LiesScientific TruthUltimate TruthSpiritual TruthMind OpeningUnderstanding LifeLies TruthBest Criminal MindsPolymathsScience EducationDiscovery In LifeUnderstanding And LoveExperimental ScienceAstronomy And UniverseDiscovering The Truth
Author:Galileo Galilei
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“The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.”

IfsInspirationalStillsFunnyUniverseNatureSpaceSunEnvironmentPlanetsSummerFruitEnvironmentalBunchDependentGardeningGrapesNight SkyBerriesNature And EnvironmentNature BeautyNature LoveInspirational NatureRevolvingNature And BeautyRipeningThe Wild NatureNature's BeautyWonder Of NatureChildren And NatureSun And StarsRevolving DoorsSour GrapesGreat OutdoorsStars And Planets
Author:Galileo Galilei
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“In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.”

InspirationTruthScienceReligionIndividualTechnologyAtheismThousandAuthorityScientistIndependentIndividualityHumblePhysicsAstronomyReasoningStatisticsSkepticismSkepticalSkepticBe HumbleModern ScienceMath And ScienceIndependent ThoughtScientific TruthGreat ScienceScience PhysicsQuestioning BeliefsScience LifeLife Changing Experience
Author:Galileo Galilei
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“The Milky Way is nothing else but a mass of innumerable stars planted together in clusters.”

WayTogetherStarsMassMilky WayClusters
Book:The Sidereal Messenger of Galileo Galilei and a Part of the Preface to Kepler's Dioptrics Containing the Original Account of Galileo's Astronomical Discoveries
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“The vain presumption of understanding everything can have no other basis than never having understood anything. For anyone who had ever experienced just once the perfect understanding of one single thing, and had truly tasted how knowledge is accomplished, would recognize that of the infinity of other truths he understands nothing.”

ScienceUnderstandingPerfectUnderstoodBasesVainAccomplishedInfinityPresumptionUnderstanding Everything
Book:Dialogue Concerning the Two Chief World Systems, Ptolemaic and Copernican, Second Revised Edition
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