33 Theme 2 - Intellectual context: the age of science and reason

The Enquiry Frame

The specification asks you to connect two linked changes across the whole period from c1580 to c1750.

This topic sits inside the option on the witch craze, so its importance is not only "history of science". It helps explain why belief in witches became more contestable. Witch beliefs had once fitted a wider intellectual world in which hidden spiritual forces, divine judgement, providence, astrology, wonders and demonic agency seemed plausible. As elite culture put more weight on natural causes, regular laws, experiment, sceptical testing and the limits of testimony, witchcraft accusations became harder to sustain in learned and legal settings.

The broad chronology looks like this:

For exam purposes, avoid a simple before-and-after story. The strongest answer will usually argue that the standards of explanation changed before popular belief fully changed. A more scientific and rational elite culture made witchcraft harder to prove and easier to doubt, but it did not instantly remove fear of maleficium, Satan, providence or spirits.

Older and Newer Worlds

To understand the impact of the age of science and reason, start with what it challenged. Around 1580, educated Europeans did not live in an intellectually empty world. They inherited a dense structure of authorities: Aristotle in natural philosophy, Ptolemy in astronomy, Galen in medicine, the Bible in theology, Roman and canon law in learned legal culture, and classical writers in education. These authorities did not all say the same thing, but they gave educated people a framework for interpreting the universe.

The older universe was often imagined as ordered, hierarchical and meaningful. In the Ptolemaic model, the Earth stood at the centre and heavenly bodies moved in ordered spheres. In Aristotelian natural philosophy, earthly things were made from the four elements and sought their natural places; the heavens were different from the corruptible Earth. Christian teaching added providence: God governed creation, signs could warn of judgement, and disorder might have moral meaning. Astrology, prodigies, comets, monstrous births, dreams and weather could all be interpreted as more than random events.

That mattered for witchcraft. Witchcraft accusations were not simply ignorant gossip floating outside elite culture. Learned demonologists argued that the Devil could work through witches, that witches made pacts, and that maleficium could harm bodies, crops, animals or households. Courts often required testimony and procedures, but the wider intellectual environment made it plausible that invisible spiritual action could have visible effects.

The new science did not replace this framework overnight. Copernicus had published his heliocentric theory in 1543, but it remained controversial for generations. Many people continued to use Ptolemaic or mixed astronomical models. Universities did not instantly abandon Aristotle. Churches did not cease to teach providence. Courts did not suddenly demand modern scientific proof. The period c1580-c1750 was therefore marked by coexistence.

Coexistence took several forms.

This is why a triumphalist answer is weak. Kepler cast horoscopes and saw his work as uncovering God's mathematical order. Newton wrote about theology and alchemy as well as physics. Some Royal Society figures were interested in reports of spirits, apparitions and witchcraft because they thought witness testimony might prove the reality of the unseen world. New methods could be used to challenge old beliefs, but they could also be used to investigate or defend parts of them.

The key change was not that everyone became secular. It was that explanation increasingly had to survive new tests: Could it be observed? Could it be repeated? Could it be measured? Was the testimony reliable? Could a natural cause explain the event? Did the reasoning follow from clear premises? By c1750, those questions had become more powerful in elite culture than they had been around 1580.

Kepler, Galileo and Newton

Kepler, Galileo and Newton matter because they changed the scale of explanation. They made the heavens look less like a separate, symbolic realm and more like a system that could be described mathematically. That did not directly disprove witchcraft, but it changed the intellectual climate in which claims about invisible powers were judged.

Johannes Kepler worked in the context of Copernican astronomy, but he did not merely repeat Copernicus. Using the careful observations of Tycho Brahe, especially of Mars, Kepler argued in Astronomia Nova in 1609 that planets moved in ellipses, not perfect circles, and that a planet moved faster when closer to the Sun and more slowly when further away. In 1619, in Harmonices Mundi, he added the law relating the time of a planet's orbit to its distance from the Sun.

Kepler's importance has three parts. First, he broke with the ancient preference for perfect circular motion. Second, he made mathematical fit more important than inherited elegance. Third, he helped turn astronomy into a search for physical causes and mathematical relationships. This was a major change in how the universe could be known: careful data and mathematical explanation could correct long-respected models.

Galileo Galilei made the challenge more visible. From 1609 he used the telescope to observe the heavens, and in 1610 he published Sidereus Nuncius. His observations included mountains and craters on the Moon, many more stars than the naked eye could see, and four moons orbiting Jupiter. Later observations of the phases of Venus gave strong support to the idea that Venus orbited the Sun. These findings did not by themselves settle every technical debate, but they damaged the assumption that the heavens were perfect, unchanging and structured exactly as older authorities had taught.

Galileo also developed arguments about motion that undermined everyday objections to a moving Earth. The deeper point is methodological: instruments could extend the senses, observation could challenge authority, and mathematics could describe motion with precision. Galileo's Dialogue Concerning the Two Chief World Systems in 1632 defended Copernican ideas so forcefully that he was tried by the Roman Inquisition in 1633 and forced to recant. The trial is important because it shows that old authorities still had power. The age of reason did not advance without resistance.

Isaac Newton produced the most influential synthesis. In Philosophiae Naturalis Principia Mathematica in 1687, he set out laws of motion and universal gravitation. The same mathematical laws could explain falling bodies on Earth and the motion of the Moon and planets. That was the crucial intellectual breakthrough: the heavens and Earth could be treated as parts of one law-governed system.

Newton's impact was enormous by the early eighteenth century. He did not make the universe seem godless. Many Newtonians saw regular natural laws as evidence of divine wisdom. But Newton did reduce the need to explain unusual events by immediate supernatural intervention. If the universe operated through stable laws, then the educated observer was encouraged to look for natural mechanisms before invoking witches, demons or prodigies.

The impact on witchcraft was indirect but important:

For exam judgement, the most important word is impact, not "discovery". The impact lay in changing what looked intellectually respectable. By 1580, a learned person might fit witchcraft, astrology, divine signs and demonic action into a meaningful cosmos. By 1750, educated elites were more likely to ask whether an event had a natural cause and whether the evidence met standards of rational proof. Kepler, Galileo and Newton did not cause that change alone, but they supplied the most famous demonstrations that nature could be explained by observation and mathematical law.