| A | B |
| Thomas Hobbes | said that people were naturally greedy and selfish and not capable of governing themselves |
| John Locke | English philosopher whose ideas influenced the writing of the Declaration of Independence |
| Baron de Montesquieu | His ideas included checks and balances, and separtation powers |
| Thomas Jefferson | 3rd US President, wrote the Declaration of Independence |
| Jean-Jacques Rousseau | said that people should be taught their civic virtue (duty as a citizen) Ex. voting |
| James Madison | 4th US President; wrote most of the US Constitution (nickname is "Father of our constitution") |
| Ptolemy | developed the "Geocentric Theory" of an earth-centered universe |
| Nicolaus Copernicus | developed the "heliocentric theory" of a sun-centered universe |
| Johannes Kepler | said that the planets move around the sun in ellipses (oval orbits) |
| Galileo Galilei | Invented an improved telescope |