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If experiments are performed thousands of times at all seasons and in every place without once producing the effects mentioned by your philosophers, poets, and historians, this will mean nothing and we must believe their words rather than our own eyes?

Galileo Galilei

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Galileo Galilei
Age: 77 †
Born: 1564
Born: February 15
Died: 1642
Died: January 8
Astrologer
Astronomer
Engineer
Inventor
Mathematician
Philosopher
Physicist
Polymath
Scientist
University Teacher
Galileo
G. Galilei
Nothing
Effects
Producing
Must
Eyes
Historian
Mean
Rather
Poets
Every
Eye
Experiments
Believe
Times
Thousands
Historians
Words
Philosopher
Mentioned
Place
Seasons
Performed
Without
Poet
Philosophers

More quotes by Galileo Galilei

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To understand the Universe, you must understand the language in which it's written, the language of Mathematics.
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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.
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Nonetheless, it moves.
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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.
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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.
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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.
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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.
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Nothing physical which sense-experience sets before our eyes, or which necessary demonstrations prove to us, ought to be called in question (much less condemned) upon the testimony of biblical passages...
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Facts which at first seem improbable will, even on scant explanation, drop the cloak which has hidden them and stand forth in naked and simple beauty.
Galileo Galilei
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Wine is sunlight, held together by water.
Galileo Galilei
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Measure what can be measured, and make measureable what cannot be measured.
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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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Nature's great book is written in mathematics.
Galileo Galilei
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They know that it is human nature to take up causes whereby a man may oppress his neighbor, no matter how unjustly. ... Hence they have had no trouble in finding men who would preach the damnability and heresy of the new doctrine from the very pulpit.
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 know what to say in a case so surprising, so unlooked for and so novel.
Galileo Galilei
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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.
Galileo Galilei
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It is surely harmful to souls to make it a heresy to believe what is proved.
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You may force me to say what you wish you may revile me for saying what I do. But it moves.
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.
Galileo Galilei