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I think that in the discussion of natural problems we ought to begin not with the Scriptures, but with experiments, and demonstrations.

Galileo Galilei

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Galileo Galilei
Age: 77 †
Born: 1564
Born: February 15
Died: 1642
Died: January 8
Astrologer
Astronomer
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Mathematician
Philosopher
Physicist
Polymath
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University Teacher
Galileo
G. Galilei
Begin
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Demonstrations
Ought
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I have never met a man so ignorant that I couldn't learn something from him.
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Nature is written in mathematical language.
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To excite in us tastes, odors, and sounds I believe that nothing is required in external bodies except shapes, numbers, and slow or rapid movements. ... if ears, tongues, and noses were removed, shapes and numbers and motions would remain, but not odors or tastes or sounds.
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The greatest wisdom is to get to know oneself.
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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.
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It has always seemed to me extreme presumptuousness on the part of those who want to make human ability the measure of what nature can and knows how to do, since, when one comes down to it, there is not one effect in nature, no matter how small, that even the most speculative minds can fully understand.
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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!
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[Copernicus] 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.
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They who depend upon manifest observations will philosophize better than those who persist in opinions repugnant to the senses.
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It is necessary for the Bible, in order to be accommodated to the understanding of every man, to speak many things which appear to differ from the absolute truth so far as the bare meaning of the words is concerned.
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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?
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The Milky Way is nothing else but a mass of innumerable stars planted together in clusters.
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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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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.
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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.
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The Bible shows the way to go to heaven, not the way the heavens go.
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I do not know what to say in a case so surprising, so unlooked for and so novel.
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To be humane, we must ever be ready to pronounce that wise, ingenious and modest statement 'I do not know'.
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It is a beautiful and delightful sight to behold the body of the Moon.
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Some, merely to contradict what I had said, did not scruple to cast doubt upon things they had seen with their own eyes again and again.
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