Famous Thinkers
Who said it?
Concepts and Philosophies
100
This scientist was sentenced to house arrest by the Catholic Church for declaring that the Earth revolved around the sun.

Galileo

100

"Cogito, Ergo Sum"

(I think, therefore I am)

Rene Descartes

100

The scientific belief that the sun is the center of our solar system.

Heliocentric solar system
200

This thinker was one of the earliest advocates of Laissez-Faire economics.

Adam Smith

200

"I disapprove of what you say, but I will defend to the death your right to say it."

Voltaire

200

A term that means to bring 'light' or 'knowledge'

Enlightenment

300

This English writer of The Leviathan is also credited with popularizing the idea of the Social Contract.

John Hobbes

300

"What goes up must come down." 

Sir Isaac Newton

300

The belief that governments should not interfere in the economy. They should just "leave it be."

Laissez-Faire economics

400

This English scientist developed the 3 Laws of Motion and the Theory of Gravity.

Sir Isaac Newton

400

Life is "Solitary, poor, nasty, brutish, and short."

John Hobbes

400

The belief that people agree to be governed in a particular manner and live peacefully together in a civilized society.

Social Contract

800

Italian inventor and artist that sketched ideas for the helicopter and military tank.

Leonardo DaVinci

800

"Until women are more rationally educated, the progress of human virtue and improvement in knowledge must receive continual checks."

Mary Wollstonecraft

800

Sir Isaac Newton developed this branch of mathematics in order to explain his theories to a colleague.

Calculus 

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