Task: Text Categorization
Input (English): This thinker was the subject of ridicule by the newspaper The Corsair, and near the end of his life he attacked the bishop H.L. Martensen in several letters. This author of The Concept of Anxiety presented three forms of despair in his Sickness unto Death, which he wrote under the pseudonym Anti-Climacus. He contrasts the aesthetic and ethical ways of life in his book Either/Or, while another work by him centers on Abraham's decision to sacrifice his son Isaac. For 10 points, name this Danish philosopher of Fear and Trembling.
Output (English): Social Science