Aristotle      

• created system of thought based on observation called logic. 
• During Middle Ages, Scholars relied on his teachings.
• By the end of Middle Ages, Scholars began to question these same teachings.

Rene Descartes

(France)

• analytic geometry
• emphasized the importance of reasoning in arriving at the truth.
• "I think, therefore, I am"

Thomas Hobbes

(England)

• Philosopher
• Convinced that if people were left alone without government, they would constantly fight among themselves.

John Locke

(England)

• Published two treatises on Government
• agreed with Hobbes on government idea
• People had natural rights-life,liberty, property (These can be seen on the U.S Constitution)
• Power should be limited. 

Montesquieu

(France)

• Baron de Montesquieu
• The Spirit Of Laws 
• Believed english government protected liberty
• Spread Newton & Locke's work
• Separation of power:Legislature, Executive, Judiciary