Instructions: In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.
Input: This thinker is the namesake of a paradox that is a logical formation of the problem of evil. His few extant works include a letter explaining his physical theory and addressed to Herodotus. Like Democritus, he was an atomist, though his version included the possibility of swerves in atomic motion to allow for free will. His major ethical teachings included that the soul is not immortal and that the person should strive to attain ataraxia. For 10 points, name this Greek philosopher who taught that the only goal in life should be to maximize ones pleasure.
Output:
Social Science