The play by William Shakespeare is based on an Italian story in Giraldi Cinthio's Hecatommithi (Grolier). In we encounter Iago, one of Shakespeare’s most evil characters. Iago is an officer in 's army and is jealous of Cassio's promotion to Lieutenant. Through deception and appearance, we see unfolded many lies and clever schemes. The astonishing thing about Iago is that he seems to make up his malicious schemes as he goes along without any forethought. Noted writer Samuel Taylor Coleridge describes Iago's plan as "motive-hunting of ....