Astronomers
Other Scientists
Enlightenment Thinkers
Other Thinkers
100

Astronomer who kept track of planetary movement for decades 

Tycho Brahe

100

He discovered calculus along with the laws of motion and gravity

Isaac Newton

100

Enlightenment thinker who was a strong advocate of freedom of speech and freedom of religion

Voltaire

100

Believed that humans had three natural rights – life, liberty, and property – and were capable of self-government

John Locke

200

Polish astronomer who kicked off the Scientific Revolution by discovering that the earth revolves around the sun

Nicolas Copernicus

200

He invented the first vaccine

Edward Jenner

200

Believed that people were naturally wicked and needed a strong monarch to maintain order

Thomas Hobbes

200

Enlightenment thinker who advocated for the education of women

Mary Wollstonecraft

300

He was the first person to use a telescope for astronomy

Galileo 

300

He was the father of modern chemistry

Robert Boyle

300

Philosopher whose idea of separation of powers appears in the American Constitution

Montesquieu

300

He wrote The Wealth of Nations which provided the intellectual foundation for a free market economy

Adam Smith

400

He discovered that the planets move in ellipses instead of circles as previously believed

Johannes Kepler

400

He learned much about human anatomy by dissecting executed criminals

Andreas Vesalius

400

Focused on the justice system and argued against unfair trials, torture, and the death penalty

Cesare Beccaria

400

French philosopher who believed that everything should be doubted unless it could be proved by reason

Rene Descartes

500

His advocacy of heliocentrism got him in trouble with the Catholic Church

Galileo

500

His belief that experimentation was the best way to gain knowledge helped lead to the Scientific Method

Francis Bacon

500

Wrote that humans must sacrifice some of their natural freedom for the sake of the collective good

Jean-Jacques Rousseau

500

This was the term for French Enlightenment thinkers who emphasized nature, reason, happiness, and liberty

The philosophes