Mathematics is the language with which God has written the universe. — Galileo Galilei Copy Share Image
Science proceeds more by what it has learned to ignore than what it takes into account. — Galileo Galilei Copy Share Image
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual. — Galileo Galilei Copy Share Image
“(T)he increase of known truths stimulates the investigation, establishment, and growth of the arts.” — Galileo Galilei Copy Share Image
It vexes me when they would constrain science by the authority of the Scriptures, and yet do not consider themselves bound to… — Galileo Galilei Copy Share Image
In the sciences, the authority of thousands of opinions is not worth as much as one tiny spark of reason in an… — Galileo Galilei Copy Share Image
“All truths are easy to understand once they have been revealed. What is difficult is to discover them.” — Galileo Galilei Copy Share Image
If experiments are performed thousands of times at all seasons and in every place without once producing the effects mentioned by your… — Galileo Galilei Copy Share Image
Spots are on the surface of the solar body where they are produced and also dissolved, some in shorter and others in… — Galileo Galilei Copy Share Image
I therefore concluded, and decided unhesitatingly, that there are three stars in the heavens moving about Jupiter, as Venus and Mercury about… — Galileo Galilei Copy Share Image
I would say here something that was heard from an ecclesiastic of the most eminent degree: The intention of the Holy Spirit… — Galileo Galilei Copy Share Image
And believe me, if I were again beginning my studies, I should follow the advice of Plato and start with the mathematical… — Galileo Galilei Copy Share Image
Among the great men who have philosophized about [the action of the tides], the one who surprised me most is Kepler. He… — Galileo Galilei Copy Share Image
It reveals to me the causes of many natural phenomena that are entirely incomprehensible in the light of the generally accepted hypotheses.… — Galileo Galilei Copy Share Image
I would beg the wise and learned fathers (of the church) to consider with all diligence the difference which exists between matters… — Galileo Galilei Copy Share Image
“Philosophy is written in that great book which ever lies before our eyes — I mean the universe — but we cannot… — Galileo Galilei Copy Share Image
Take note, theologians, that in your desire to make matters of faith out of propositions relating to the fixity of sun and… — Galileo Galilei Copy Share Image
“ Sì perché l'autorità dell'opinione di mille nelle scienze non val per una scintilla di ragione di un solo, sì perché le… — Galileo Galilei Copy Share Image
But what exceeds all wonders, I have discovered four new planets and observed their proper and particular motions, different among themselves and… — Galileo Galilei Copy Share Image
We see only the simple motion of descent, since that other circular one common to the Earth, the tower, and ourselves remains… — Galileo Galilei Copy Share Image
I cannot but be astonished that Sarsi should persist in trying to prove by means of witnesses something that I may see… — Galileo Galilei Copy Share Image
When the moon is ninety degrees away from the sun it sees but half the earth illuminated (the western half). For the… — Galileo Galilei Copy Share Image
Their vain presumption of knowing all can take beginning solely from their never having known anything; for if one has but once… — Galileo Galilei Copy Share Image
The vain presumption of understanding everything can have no other basis than never having understood anything. For anyone who had ever experienced… — Galileo Galilei Copy Share Image
The prohibition of science would be contrary to the Bible, which in hundreds of places teaches us how the greatness and the… — Galileo Galilei Copy Share Image
I therefore concluded, and decided unhesitatingly, that there are three stars in the heavens moving about Jupiter, as Venus and Mercury about… — Galileo Galilei Copy Share Image
I wish, my dear Kepler, that we could have a good laugh together at the extraordinary stupidity of the mob. What do… — Galileo Galilei Copy Share Image
“I have been in my bed for five weeks, oppressed with weakness and other infirmities from which my age, seventy four years,… — Galileo Galilei Copy Share Image
The Grand Duke [of Tuscany] ...after observing the Medicaean plants several times with me ... has now invited me to attach myself… — Galileo Galilei Copy Share Image
“I esteem myself happy to have as great an ally as you in my search for truth. I will read your work… — Galileo Galilei Copy Share Image
Oh, my dear Kepler, how I wish that we could have one hearty laugh together. Here, at Padua, is the principal professor… — Galileo Galilei Copy Share Image
Surely, God could have caused birds to fly with their bones made of solid gold, with their veins full of quicksilver, with their flesh… — Galileo Galilei Copy Share Image
If experiments are performed thousands of times at all seasons and in every place without once producing the effects mentioned by your philosophers, poets,… — Galileo Galilei Copy Share Image
“(T)he increase of known truths stimulates the investigation, establishment, and growth of the arts.” — Galileo Galilei Copy Share Image
In the long run my observations have convinced me that some men, reasoning preposterously, first establish some conclusion in their minds which, either because… — Galileo Galilei Copy Share Image
Nature . . . is inexorable and immutable; she never transgresses the laws imposed upon her, nor cares a whit whether her abstruse reasons… — Galileo Galilei Copy Share Image
Holy Writ was intended to teach men how to go to Heaven not how the heavens go. — Galileo Galilei Copy Share Image
And who can doubt that it will lead to the worst disorders when minds created free by God are compelled to submit slavishly to… — Galileo Galilei Copy Share Image
Among the great men who have philosophized about [the action of the tides], the one who surprised me most is Kepler. He was a… — Galileo Galilei Copy Share Image
Infinities and indivisibles transcend our finite understanding, the former on account of their magnitude, the latter because of their smallness; Imagine what they are… — Galileo Galilei Copy Share Image
I do not feel obliged to believe that the same God who has endowed us with senses, reason, and intellect has intended us to… — Galileo Galilei Copy Share Image
What ever the course of our lives, we should recieve them as the highest gift from the hand of God, in which equally reposed… — Galileo Galilei Copy Share Image
I cannot but be astonished that Sarsi should persist in trying to prove by means of witnesses something that I may see for myself… — Galileo Galilei Copy Share Image
![“Among the great men who have philosophized about [the action of the tides], the one who surprised me most is Kepler. He was a person of independent genius, [but he] became interested in the action of the moon on the water, and in other occult phenomena, and similar childishness.” quote by Galileo Galilei](https://sms4smile.com/quotes/img-quotes/96d/galileo-galilei-2377_action_among-the-great-men-who-have-philosophiz_131150.jpg)
![“I would beg the wise and learned fathers (of the church) to consider with all diligence the difference which exists between matters of mere opinion and matters of demonstration. ... [I]t is not in the power of professors of the demonstrative sciences to alter their opinions at will, so as to be…” quote by Galileo Galilei](https://sms4smile.com/quotes/img-quotes/c92/galileo-galilei-2377_altered_i-would-beg-the-wise-and-learned-fathers_1856623.jpg)
![“But what exceeds all wonders, I have discovered four new planets and observed their proper and particular motions, different among themselves and from the motions of all the other stars; and these new planets move about another very large star [Jupiter] like Venus and Mercury, and perchance the…” quote by Galileo Galilei](https://sms4smile.com/quotes/img-quotes/069/galileo-galilei-2377_announcements_but-what-exceeds-all-wonders-i-have-disc_402976.jpg)
![“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…” quote by Galileo Galilei](https://sms4smile.com/quotes/img-quotes/e83/galileo-galilei-2377_age_i-have-been-in-my-bed-for-five-weeks-opp_2817122.jpg)
![“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…” quote by Galileo Galilei](https://sms4smile.com/quotes/img-quotes/986/galileo-galilei-2377_annuals_the-grand-duke-of-tuscany-after-observin_2931656.jpg)
![“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…” quote by Galileo Galilei](https://sms4smile.com/quotes/img-quotes/70c/galileo-galilei-2377_argument_oh-my-dear-kepler-how-i-wish-that-we-cou_2820576.jpg)
