Antony and Cleopatra, Coriolanus, Hamlet, Julius Caesar, King Lear, Macbeth, Othello, Romeo and Juliet, Timon of Athens, Titus Andronicus.

BBC: CBBC Newsround | SHAKESPEARE | Shakespeare the playwright

The Romans weren't used to seeing the images of their rulers on currency--only kings did that, and they thought it was further proof that Caesar was about to make himself king.

FORBES: Magazine Article

In a long interview he invokes Martin Luther King, Mother Teresa, Churchill, Caesar and Lincoln.

FORBES: Database evangelist