Oscar Wilde wrote.
Oscar Wilde . At the turn of the 1890s , he refined his ideas about the supremacy of art in a series of dialogues and essays , and incorporated themes of decadence , duplicity , and beauty into his only novel , The Picture of Dorian Gray ( 1890 ) . There he wrote his last work , The Ballad of Reading Gaol ( 1898 ) , a long poem commemorating the harsh rhythms of prison life . The Importance of Being Earnest , A Trivial Comedy for Serious People is a play by Oscar Wilde .