Abstract
Aristotle wrote Politics as a criticism of Plato's Republic, after having been his student for 20 years. Aristotle especially disagrees with Plato's view that only knowledge and perfect forms count. He would criticize Plato's view that women and children should be held in the perfect state and that there should be no private property. These major differences between both authors come from their different approaches. Plato was using inductive reasoning: leaving from his own assumptions on justice then describing the city afterward, meanwhile Aristotle was having an empirical reasoning as he was starting from the components of the city to reach its whole. We will then see that it is this particular approach that may excuse slavery to Aristotle.
