Task: Text Categorization
Input (English): 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 (English): Social Science