Within Either/Or (1843), the great work that marked Søren Kierkegaard's breakthrough, the first part contains A's papers, a collection of articles in which A demonstrates his “aesthetic,” i.e., a life‐enjoying, amoral attitude to human existence. In the second part, B is A's friend and opposite: civil servant, husband, man of duty. In letters he attempts to turn the Aesthete into an Ethicist. In a penetrating analysis of Mozart's opera Don Giovanni, Sophocles’tragedy Antigone, and Scribe's comedy The First Love, A passes interesting dramaturgical judgments, propounds general aesthetic norms, and gives samples to show that, with virtuoso linguistic art, he can create both pictures in motion and a musical procession. A is a fictional figure, but his professional assessments belong to the author, Kierkegaard, who thus proves his penetrating understanding of the interrelations of different art forms.