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|Historical Context=The [[Scientific Mosaic|scientific mosaic]] of the late sixteenth and early seventeenth centuries was based primarily on the works of Aristotle and some later Hellenistic natural philosophers, reconciled in various ways with Christian theology by scholars in the High Middle Ages. This '''Aristotelian-scholastic mosaic''' included Christian theology, humoral physiology, astrology, Ptolemaic astronomy, and Christian (Catholic, in many but not all communities contemporaneous with Descartes) theology.[[CiteRef::Haldane (1905)]] Descartes was well educated in this tradition through his attendance at the prestigious Jesuit La Fleche College between the ages of ten and eighteen. He studied a traditional scholastic curriculum of logic, grammar, philosophy, mathematics, and theology. Natural philosophy was taught from the works of Aristotle as interpreted by Christian scholars. Descartes also received an education in mathematics that was unusual for the Aristotelian tradition, and excelled at math. [[CiteRef::Gaukroger (1995)|pp. 38-61]][[CiteRef::Rodis-Lewis (1992)]][[CiteRef::Garber (1992)]]
Descartes’ major writings came in a time of social and intellectual upheaval in Europe. He was a participant in the Thirty Years War before writing his major works and traveled extensively around Europe at a time when the continent was embroiled in both reformation and counter-reformation, both of which were a wellspring of new thought in theology and philosophy. The community of the time was engaged with major challenges to the Aristotelian-scholastic tradition. These came from a variety of sources, including various varieties of Platonism, Hermeticism, and the Chemical Philosophy of Paracelsus, among other movements.[[CiteRef::Garber (1992)]] There were new developments in optics, astronomy, and physiology.[[CiteRef::Cottingham (1992)]] Aristotle's earth-centered cosmology had been challenged by the work of Nicolaus Copernicus(1473-1543), Johannes Kepler(1571-1630), and Galileo Galilei(1564-1642), which Descartes was familiar with.[[CiteRef::Hatfield (2016)]][[CiteRef::Rodis-Lewis (1992)]][[CiteRef::Ariew (1986)]]
The '''mechanical natural philosophy''' was a [[Theory Pursuit|pursued]] radical alternative to Aristotelian cosmology, embraced by some supporters of Copernican heliocentrism.[[CiteRef::Luthy, Murdoch, and Newman (2001b)]][[CiteRef::Chalmers (2014)]][[CiteRef::Gaukroger (1995)|p. 69-73]] It rejected the Aristotelian fundamentals of form, substance, and teleology, and the idea that matter is continuous. Instead of explaining the properties of visible bodies in terms of form, it instead maintained that the world consisted of invisibly tiny particles of matter and that all the observable properties of the visible bodies were a consequence of these particles and their interactions with one another. The particles interacted mechanically, by contact, and it was often supposed that they rendered natural phenomena potentially explainable in geometrical and mathematical terms. Unlike Aristotle's physics, it was compatible with a moving planetary Earth. It can be traced to the Ancient Greek '''atomism''' of Democritus (circa 460-370 BCE) and later Epicurean philosophers. Atomism was reintroduced into European thought in the fifteenth century with the rediscovery of the Roman poet Lucretius's ''De rerum natura''. In the early seventeenth century, it was championed by Giordano Bruno (1548-1600), Nicolas Hill (1570-1610?), Sebastian Basso (1573-1625?), Francis Bacon (1561-1626), and Galileo Galilei.[[CiteRef::Garber (1992)]][[CiteRef::Klein (2012)]][[CiteRef::Gatti (2001)]][[CiteRef::Luthy, Murdoch, and Newman (2001b)]]
