“In the midst of all dwells the Sun. For who could set this luminary in another or better place in this most glorious temple, than whence he can at one and the same time brighten the whole.”

“There is talk of a new astrologer [Nicolaus Copernicus] who wants to prove that the earth moves and goes around instead of the sky, the sun, the moon, just as if somebody were moving in a carriage or ship might hold that he was sitting still and at rest while the earth and the trees walked and moved. But that is how things are nowadays: when a man wishes to be clever he must . . . invent something special, and the way he does it must needs be the best! The fool wants to turn the whole art of astronomy upside-down. However, as Holy Scripture tells us, so did Joshua bid the sun to stand still and not the earth.[Martin Luther stating his objection to heliocentrism due to his Scripture's geocentrism]”

“To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge.”

“Actually, what we really need to remember about Galileo is that most of the people who use his name in argument could barely spell it, let alone tell us what actually happened to the man. His case is used over and over again because critics can't think of any other scientists who were mistreated by the Church. And in this instance they're right. There may have been some people in the scientific world who did not enjoy Church support and were even challenged by Catholicism but, sorry to disappoint, there weren't very many of them. The Church has been the handmaiden of science and scientific discovery, and those who refer to Galileo tend to forget that Louis Pasteur, the inventor of pasteurization, was a devout Catholic, as was Alexander Fleming, who gave us penicillin. Or Father Nicolaus Copernicus, who first proposed the theory of the earth revolving around the sun - this was precisely what Galileo stated, but Copernicus taught it as theory and not fact. Or Monsignor Georges Henri Joseph Édouard Lemaître, a Belgian Roman Catholic priest and professor of physics at the Catholic University of Leuven, who proposed what became known as the Big Bang theory of the origin of the Universe. In the field of acceleration, Fr. Giambattista Riccioli changed the way we understand that particular science; the father of modern Egyptology was Fr. Athanasius Kircher, and the Yugoslavian Fr. Roger Boscovich was the founder of modern atomic theory.”

“Although all the good arts serve to draw man's mind away from vices and lead it toward better things, this function can be more fully performed by this art, which also provides extraordinary intellectual pleasure.”

“I am aware that a philosopher's ideas are not subject to the judgment of ordinary persons, because it is his endeavour to seek the truth in all things, to the extent permitted to human reason by God.”

“So far as hypotheses are concerned, let no one expect anything certain from astronomy, which cannot furnish it, lest he accept as the truth ideas conceived for another purpose, and depart from this study a greater fool than when he entered it.”

“Therefore, when I considered this carefully, the contempt which I had to fear because of the novelty and apparent absurdity of my view, nearly induced me to abandon utterly the work I had begun.”

“For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.”

“In so many and such important ways, then, do the planets bear witness to the earth's mobility.”

“The earth together with its surrounding waters must in fact have such a shape as its shadow reveals, for it eclipses the moon with the arc of a perfect circle.”