A Cambridge graduate, Smart settled in London and pursued a literary career—writing poetry, editing a humorous magazine, and producing plays. His two best known works are A Song to David, an inspirational piece rife with superb imagery, and Jubilate Agno, an idiosyncratic and often anthologized paean to his cat, Jeoffry, that only survives in fragments. Both were written while he was confined in an asylum for a religious mania. What unconventional pseudonym did he sometimes use? Discuss