Charles Dickens pen name is Boz. Charles John Huffam Dickens was a British English writer and social critic of 19th century. He created some of the world's best-known fictional characters and is regarded by many as the greatest novelist of the Victorian era.
Explanation: Splitting the diagram in half horizontally and vertically, each quarter contains the alphabet written in sequence, with the relative position of this sequence rotating 1/4 turn anti-clockwise as you move clockwise around the quarters.