The Scientific Revolution and Enlightenment: Key Concepts

Authority Before the 1500s

Before the 1500s, the final authority on most knowledge was derived from Greek and Roman thinkers and the Bible.

Origins of the Scientific Revolution

In the mid-1500s, attitudes shifted as people began basing their thinking on careful observation and a willingness to question traditional beliefs. Furthermore, European voyages of discovery revealed plants and animals previously unknown to ancient writers.

The Heliocentric Theory

Nicolaus Copernicus developed the heliocentric theory, which posits that the sun is the center of the solar system. This differed from the Church-supported geocentric theory, which claimed the Earth was the center of the universe. Copernicus delayed publishing his work due to fear of religious persecution. Later, Galileo Galilei proved and published these findings. Despite being placed under house arrest by the Church, his ideas continued to spread.

The Scientific Method

Unlike relying on historical, religious, or classical teachings, the scientific method is based on experimentation and observation. The process involves:

• Asking a question based on physical observations
• Forming a hypothesis
• Testing the hypothesis through experimentation
• Analyzing the results
• Refining the hypothesis based on data

Scientific Inventions and Advancements

New tools and discoveries accelerated the Scientific Revolution:

• Instruments: The invention of the microscope and weather-tracking tools.
• Medicine: Detailed anatomical drawings and the discovery of how the heart pumps blood.
• Public Health: Edward Jenner’s development of vaccinations.
• Chemistry: Scientists challenged the ancient belief that everything was composed of only four elements: earth, water, fire, and air.

Hobbes vs. Locke: Government and Human Nature

The two thinkers held contrasting views on the role of the state:

• Thomas Hobbes: Believed that without government, humanity would exist in a state of constant war. He advocated for a social contract where individuals surrender their rights to a central authority to maintain order.
• John Locke: Argued that all people possess three natural rights: life, liberty, and property. He believed the government's sole purpose is to protect these rights; if it fails to do so, citizens have the right to overthrow it.

The Philosophes and Enlightenment Beliefs

The philosophes were the primary thinkers of the Enlightenment. They advocated for five core beliefs:

1. Truth is discovered through reason.
2. What is natural is inherently good and reasonable.
3. Acting according to nature leads to happiness.
4. A scientific approach fosters progress and better lives.
5. Reason is the key to achieving freedom.