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 To refute the latter I have collected many proofs, but I do not publish them, because I am deterred by the fate of our teacher Copernicus who, although he had won immortal fame with a few, was ridiculed and condemned by countless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}

Galileo Galilei

Mots clés science truth science-vs-religion astronomy ridicule copernicus nicolaus-copernicus johannes-kepler kepler

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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?

Galileo Galilei

Mots clés science astronomy telescope johannes-kepler kepler

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Why should we place Christ at the top and summit of the human race? Was he kinder, more forgiving, more self-sacrificing than Buddha? Was he wiser, did he meet death with more perfect calmness, than Socrates? Was he more patient, more charitable, than Epictetus? Was he a greater philosopher, a deeper thinker, than Epicurus? In what respect was he the superior of Zoroaster? Was he gentler than Lao-tsze, more universal than Confucius? Were his ideas of human rights and duties superior to those of Zeno? Did he express grander truths than Cicero? Was his mind subtler than Spinoza’s? Was his brain equal to Kepler’s or Newton’s? Was he grander in death – a sublimer martyr than Bruno? Was he in intelligence, in the force and beauty of expression, in breadth and scope of thought, in wealth of illustration, in aptness of comparison, in knowledge of the human brain and heart, of all passions, hopes and fears, the equal of Shakespeare, the greatest of the human race?

Robert G. Ingersoll

Mots clés wisdom kindness buddhism shakespeare patience atheism isaac-newton newton william-shakespeare stoicism buddha socrates baruch-spinoza spinoza cicero epicurus epictetus gautama-buddha bruno johannes-kepler kepler zeno giordano-bruno laozi zeno-of-citium zoroaster

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Foreshadowings of the principles and even of the language of [the infinitesimal] calculus can be found in the writings of Napier, Kepler, Cavalieri, Fermat, Wallis, and Barrow. It was Newton's good luck to come at a time when everything was ripe for the discovery, and his ability enabled him to construct almost at once a complete calculus.

W.W. Rouse Ball

Mots clés science history scientists discovery isaac-newton newton mathematics calculus fermat johannes-kepler kepler barrow pierre-de-fermat cavalieri infinitesimal napier wallis

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