Original: At the height of his fame and success , whilst his masterpiece , The Importance of Being Earnest ( 1895 ) , was still on stage in London , Wilde sued his lover 's father for libel .
Simplified: At the height of his fame and successâ '' his masterpiece , The Importance of Being Earnest , was still on stage in Londonâ '' Wilde sued his lover 's father for libel .