Enlightenment Ideologies

5 Main Ideas of the Enlightenment

There were many different important ideas and ideologies of the Enlightenment. However, the five main ideas of the Enlightenment were:

1. A strong conviction in reason
2. Emphasis on human learning and its potential
3. Religious toleration and priority on secular learning
4. The belief that the government had a duty or social contract with its citizens
5. The premise that humanity had certain natural rights

Learn more about these five main ideas of the Enlightenment and other Enlightenment ideologies and ideas in the following sections.

Significant Enlightenment Ideologies

Enlightenment ideologies were closely linked to the Scientific Revolution that came before it. Enlightenment thinkers developed several ideas on philosophy, science, and human nature.

Enlightenment Ideologies on Philosophy and Science

Newton and Francis Bacon's ideas on science and experimentation were important forerunners to the Enlightenment. Enlightenment thinkers applied their ideas to their philosophies on human nature and society.

This notion gave rise to the concepts of rationalism, empiricism, and skepticism. Learn a bit more about these Enlightenment ideologies and the authors and thinkers associated with them below.

It's worth pointing out that these ideas and their main thinkers should not be seen as silos. There was often dialogue and debate among them. For example, rationalists and empiricists debated whether knowledge could be attained only through experience or also by logic.

Immanuel Kant reconciled this debate by synthesizing rationalism and empiricism. He argued that experience was fundamental to human knowledge, but reason allows humans to process and understand that experience.

Secular Ideologies in the Enlightenment

With their emphasis on reason and science, Enlightenment philosophers rejected the idea of supernatural forces and superstition. This meant they often criticized religion and the institutional church. Thus, secular ideologies and the Enlightenment are closely associated.

However, it is a common misconception that the Enlightenment promoted atheism or was anti-religion. While some Enlightenment thinkers, such as Denis Diderot, did embrace atheism, most did believe in a god and Christianity. Most adopted a religious philosophy of Deism.

While many remained Christian, most Enlightenment thinkers were highly critical of the organized church. The period leading up to the Enlightenment saw the religious conflict of the Reformation and the Thirty Years' War. This, along with Enlightenment ideologies like skepticism, led most to adopt a philosophy of religious toleration.

Voltaire stands out as highly critical, while others like John Locke and Jean-Jacques Rousseau were more conciliatory towards religion itself–they did believe religion pertains to the individual and argued for the separation of church and state.

This is why secular ideologies and the Enlightenment are so closely linked.

Fig 2 - A German painting paying homage to Enlightenment poets Goethe, Wieland, Herder, and Schiller.

Individualism and Enlightenment Ideology on Self-Interest

This emphasis on religion as an individual affair is tied to Enlightenment ideology's emphasis on individualism.

The ideas of Enlightenment ideology on self-interest are closely associated with French thinker Alexis de Tocqueville. He wrote an influential book on his observations of the newly independent United States, where he noted that many people voluntarily helped others because they saw it in their own self-interest. He observed that many worked for the greater good of the group as a way also to improve themselves.

Interestingly, de Tocqueville was writing a critique of his native France, where many Enlightenment ideologies had emerged and led to the French Revolution. He felt that individualism had gone too far and believed this concept of Enlightened self-interest and association and working together for the good of all, and, by extension, the good of the individual was better for society.

Another influential thinker that expressed an Enlightenment ideology on self-interest was Adam Smith. Writing about the economy, he imagined the idea of an "invisible hand" that guided people to pursue their own economic interests, which, in his view, would produce the best outcome for everyone.

This view of acting on one's self-interest as a good thing was a significant shift as it, similar to de Tocqueville, contended that acting on one's self-interest was not counter to the good of society as a whole.

Enlightenment Ideologies and the Social Contract

Enlightenment Ideologies' emphasis on individualism and liberty did not mean they believed people should have unlimited freedoms and no duty to society. Key to most Enlightenment ideologies was the idea of the social contract.

Fig 3 - Rousseau.

Natural Rights

The concept of the social contract is closely linked to the Enlightenment ideology of natural rights. John Locke was the thinker who first expressed this concept. For Locke, god's natural laws gave everyone certain rights of life, liberty, and property. He believed the government's main job under the social contract was to uphold these natural rights.

This idea of natural rights and the duty of the government to protect them became crucial to developing democratic-republican governments based on Enlightenment ideologies.

Impact of Enlightenment Ideologies

The impact of Enlightenment ideologies was enormous. It inspired significant political developments and several revolutions, among them:

• The Glorious Revolution in Britain
• United States Independence
• The French Revolution
• The Haitian Revolution and Haitian Independence
• The independence of the Spanish colonies of Latin America and the Caribbean

Fig 4 - "Signing of the United States Declaration of Independence," a document inspired by Enlightenment ideologies.

Many of these revolutions and their new political systems drew on the Enlightenment ideologies of the separation of church and state, the social contract, and natural rights. They also created the type of democratic representative government that is dominant in Western Europe today.

Criticism of Enlightenment Ideas

Enlightenment ideologies were not totally accepted by everyone in their time or in more recent times.

A Counter-Enlightenment occurred among some European thinkers in the 18th and 19th centuries. While not necessarily a unified movement, some criticized the Enlightenment ideologies' lack of regard for emotion and the arts. Romanticism arose in many ways as a reaction against the cold, hard logic of the Enlightenment.

In the 20th century, there were also philosophers who critiqued some of the ideas of the Enlightenment. For example, Max Horkheimer and Theodor W. Adorno's work Dialectics of Enlightenment argue that philosophy has become over-rationalized and trust in reason helped lead to the totalitarianism of fascism and Soviet communism. Michel Foucault made a similar critique that Enlightenment ideologies' elevation of reason promoted monism instead of pluralism.