As empires expanded and trade routes led to more interactions, intellectuals
in the 1th and 18th centuries such as Descartes began to emphasize reason
over tradition and individualism over community values. These shifts were
called the Enlightenment. The ideals of this movement, such as individualism,
freedom, and self-determination, challenged the roles of monarchs and church
leaders and planted the seeds of revolution in the United States, France, and
around the world. Growing out of the Scientifc Revolution and the humanism of the Renaissance,
Enlightenment thought was optimistic. Many writers believed that applying
reason to natural laws would result in progress. While not denying the existence
of God, they emphasized human accomplishments in understanding the natural
world. Such beliefs led to the conclusion that natural laws governed the social
and political spheres as well. While traditional religion did not disappear, it
became less pervasive.
New ideas emerged about how to improve society. Schools of thought
including socialism and liberalism arose, giving rise to the period being called
“the Age of Isms.” Opposing socialism and liberalism were the currents of
conservatism, particularly popular among the European ruling class. (All of
these “isms” are defned later in this topic. The clash between new ideas and old political structures led to revolutions
that often had two aims: independence from imperial powers and constitutional
representation. The breakup of empires and the emergence of new forms of
government often followed. These developed out of the concept of nationalism,
a feeling of intense loyalty to others who share one’s language and culture. The
idea that people who share a culture should also live in an independent nation-
state threatened to destroy all of Europe’s multiethnic empires.
In the 17th century, Francis Bacon emphasized empirical methods of scientifc
inquiry. Empiricism is the belief that knowledge comes from sensed
experience, from what you observe through your experience, including through
experiments. Rather than relying on reasoning about principles provided by
tradition or religion, Bacon based his conclusions on his observation of natural
data. Hobbes and Locke In the same century, philosophers Thomas Hobbes
(author of Leviathan, 1651
and John Locke (author of Two Treatises of
Government, 160
viewed political life as the result of a social contract.
Hobbes argued that people’s natural state was to live in a bleak world in which
life was “nasty, brutish, and short.” However, by agreeing to a social contract,
they gave up some rights to a strong central government in return for law and
order.
Locke, on the other hand, argued that the social contract implied the right,
even the responsibility, of citizens to revolt against unjust government. Locke
thought that people had natural rights to life, liberty, and the pursuit of property.
Another of Locke’s infuential ideas is found in An Essay Concerning Human
Understanding
160
, in which he proposed that a child was born with a
mind like a “blank slate” (tabula rasa
waiting to be flled with knowledge.
In a world in which most people believed that an individual’s intelligence,
personality, and fate were heavily determined by their ancestry, Locke’s
emphasis on environment and education in shaping people was radical.
The Philosophes In the 18th century, a new group of thinkers and writers
who came to be called the philosophes explored social, political, and economic
theories in new ways. In doing so, they popularized concepts that they felt
followed rationally upon those of the scientifc thinkers of the 1th century.
Taking their name from the French word philosophe
“philosopher”
, these
writers included Thomas Jefferson and Benjamin Franklin from America,
Adam Smith from Scotland, and several French thinkers
Of particular importance to writers of the new constitutions in France and
America in the 18th and 1th centuries were the ideas of Baron Montesquieu.
His famous work The Spirit of Laws
18
praised the British government’s
use of checks on power because it had a Parliament. Montesquieu thus
infuenced the American system, which adopted his ideas by separating its
executive branch
the president
from its legislative branch
Congress
and
both from its third branch
the federal judiciary
.
Francois-Marie Arouet, pen name Voltaire, is perhaps best known for his
social satire Candide
162
. He was famous during his lifetime for his wit and
for his advocacy of civil liberties. Exiled for three years due to a confict with
a member of the French aristocracy, Voltaire lived in England long enough
to develop an appreciation for its constitutional monarchy and a regard for
civil rights. He brought these ideas back to France, where he campaigned for
religious liberty and judicial reform. His correspondence with heads of state
such as Catherine the Great of Russia and Frederick the Great of Prussia
and
his extensive writings, including articles in Diderot’s Encyclopedia, are still
quoted today. His idea of religious liberty infuenced the U.S. Constitution.
A contemporary of Voltaire was the writer Jean-Jacques Rousseau, who
expanded on the idea of the social contract as it had passed down through the
work of Hobbes and Locke. One of Rousseau’s early works was Emile, or On
Education
162
in which he laid out his ideas on child-rearing and education.
A later work, The Social Contract
162
, presented the concept of the General
Will of a population and the obligation of a sovereign to carry out that General
Will. An optimist who believed that society could improve, Rousseau inspired
many revolutionaries of the late 18th century.
Adam Smith One of the most infuential thinkers of the Enlightenment
was Adam Smith. In his book The Wealth of Nations
16
, Smith responded
to mercantilism by calling for freer trade. While Smith did support some
government regulations and saw the benefts of taxes, he generally advocated
for laissez-faire, a
French phrase for “leave
alone.” This approach
meant that governments
should reduce their
intervention in economic
decisions. Smith believed
that if businesses and
consumers were allowed
to make choices in
their own interests, the
“invisible hand” of the
market would guide them
to make choices benefcial
for society. His ideas
provided a foundation for
capitalism, an economic
system in which the
means of production,
such as factories and
natural resources, are
privately owned and are
operated for proft. The Enlightenment’s emphasis on reason led some thinkers
to reexamine the relationship of humans to God. Some adopted Deism, the
belief that a divinity simply set natural laws in motion. Deists compared the
divinity to a watchmaker who makes a watch but does not interfere in its day-
to-day workings. Deists believed these laws could be best understood through
Adam Smith was one of the first modern economists.
scientifc inquiry rather than study of the Bible. Despite their unorthodox
ideas, many Deists viewed regular church attendance as an important social
obligation and a way people received moral guidance.
Thomas Paine, never one to shrink from confict, was militant in his
defense of Deism in the book The Age of Reason
1
. Paine’s previous work,
16
, made him popular in America for advocating liberty
from Britain, but his anti-church writings damaged much of his popularity.