Although the intellectual movement called "The Enlightenment" is usually associated with the 18th century, its roots in fact go back much further. But before we explore those roots, we need to define the term. This is one of those rare historical movements which in fact named itself. Certain thinkers and writers, primarily in London and Paris, believed that they were more enlightened than their compatriots and set out to enlighten them.

They believed that human reason could be used to combat ignorance, superstition, and tyranny and to build a better world. Their principal targets were religion (embodied in France in the Catholic Church) and the domination of society by a hereditary aristocracy.

Background in Antiquity

To understand why this movement became so influential in the 18th century, it is important to go back in time. We could choose almost any starting point, but let us begin with the recovery of Aristotelian logic by Thomas Aquinas in the 13th century. In his hands the logical procedures so carefully laid out by the ancient Greek philosopher Aristotle were used to defend the dogmas of Christianity; and for the next couple of centuries, other thinkers pursued these goals to shore up every aspect of faith with logic. These thinkers were sometimes called "schoolmen" (more formally, "scholastics,") and Voltaire frequently refers to them as "doctors," by which he means "doctors of theology."

Unfortunately for the Catholic Church, the tools of logic could not be confined to the uses it preferred. After all, they had been developed in Athens, in a pagan culture which had turned them on its own traditional beliefs. It was only a matter of time before later Europeans would do the same.

The Renaissance Humanists

In the 14th and 15th century there emerged in Italy and France a group of thinkers known as the "humanists." The term did not then have the anti-religious associations it has in contemporary political debate. Almost all of them were practicing Catholics. They argued that the proper worship of God involved admiration of his creation, and in particular of that crown of creation: humanity. By celebrating the human race and its capacities they argued they were worshipping God more appropriately than gloomy priests and monks who harped on original sin and continuously called upon people to confess and humble themselves before the Almighty. Indeed, some of them claimed that humans were like God, created not only in his image, but with a share of his creative power. The painter, the architect, the musician, and the scholar, by exercising their intellectual powers, were fulfilling divine purposes.

This celebration of human capacity, though it was mixed in the Renaissance with elements of gloom and superstition (witchcraft trials flourished in this period as they never had during the Middle Ages), was to bestow a powerful legacy on Europeans. The goal of Renaissance humanists was to recapture some of the pride, breadth of spirit, and creativity of the ancient Greeks and Romans, to replicate their successes and go beyond them. Europeans developed the belief that tradition could and should be used to promote change. By cleaning and sharpening the tools of antiquity, they could reshape their own time.

Galileo Galilei, for instance, was to use the same sort of logic the schoolmen had used--reinforced with observation--to argue in 1632 for the Copernican notion that the earth rotates on its axis beneath the unmoving sun. The Church, and most particularly the Holy Inquisition, objected that the Bible clearly stated that the sun moved through the sky and denounced Galileo's teachings, forcing him to recant (take back) what he had written and preventing him from teaching further. The Church's triumph was a pyrrhic victory, for though it could silence Galileo, it could not prevent the advance of science (though most of those advances would take place in Protestant northern Europe, out of the reach of the pope and his Inquisition).

But before Galileo's time, in the 16th century, various humanists had begun to ask dangerous questions. Franois Rabelais, a French monk and physician influenced by Protestantism, but spurred on by his own rebelliousness, challenged the Church's authority in his Gargantua and Pantagruel, ridiculing many religious doctrines as absurd.

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The Enlightenment