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It also prevented discoveries from getting out, as the discoveries countered certain aspects of Christian belief (and are things that we commonly accept today, yet we had no idea how it contrasted with idea of Christianity). These types of things could be seen in the Scientific Revolution when natural philosophers such as Galileo were silenced in order to prevent spreading ideas of “heresy.”
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A great many early scientists were overtly religious – for example, Sir Isaac Newton (who wrote more on theology than he did science), Johannes Kepler, Sir Michael Faraday, Lord Kelvin, James Clerk Maxwell, and even Galileo himself. In fact, they were often motivated by a desire to explore the majesty of God’s creation.
As philosopher Kenneth Boyce said,
"Christianity emphasizes the beliefs that the universe was freely created by God and that human beings were created in God’s image. Together, these two doctrines encouraged the belief that the universe is a rational place that can be investigated by human beings, but also, since it was freely created by God, something that had to be investigated through observation and not just through pure reasoning. This is because if the universe was freely created by God, then the logical possibility exists that it could have been otherwise, and so we have to look and see which way it really is. It was a Christian view of reality, then, that helped sow the seeds of the development of what we today would call the scientific method. "
As for Galileo, it is a gross oversimplification to say that the church simply wanted to silence him for his views. Galileo was a personal friend of Pope Urban VIII, and so Galileo received his blessing to write his text, Dialogue Concerning the Two Chief World Systems (1632). This featured a dialogue between defenders both the Ptolemaic and Copernican models. In his usual abrasive manner though, Galileo depicted the Ptolemaic advocate as a bit of a dullard who closely resembled Pope Urban VIII himself. This naturally incurred the Pope’s ire.
Did the Pope react irrationally and emotionally? Certainly. My point is that this isn’t simply a case of the Pope deciding to silence contrary scientific views, as laypeople (and especially anti-religionists) are wont to claim.