To convey this to an audience demands of the actor who plays the role the most violent contrast in the way he acts when Iago is with others and the way he acts when he is left alone. With others, he must display every virtuoso trick of dramatic technique for which great actors are praised, perfect control of movement, gesture, expression, diction, melody and timing, and the ability to play every kind of role, for there are as many "honest" lagos as there are characters with whom he speaks, a Roderigo Iago, a Cassio Iago, an Othello Iago, a Desdemona Iago, etc. When he is alone, on the other hand, the actor must display every technical fault for which bad actors are criticized. He must deprive himself of all stage presence, and he must deliver the lines of his soliloquies in such a way that he makes nonsense of them. His voice must lack expression, his delivery must be atrocious, he must pause where the verse calls for no pauses, accentuate unimportant words, etc.
in
If Iago is so alienated from nature and society that he has no relation to time and place—he could turn up anywhere at any time—his victims are citizens of Shakespeare's Venice.
To be of dramatic interest, a character must to some degree be at odds with the society of which he is a member, but his estrangement is normally an estrangement from a specific social situation.
Shakespeare's Venice is a mercantile society, the purpose of which is not military glory but the acquisition of wealth. However, human nature being what it is, like any other society, it has enemies, trade rivals, pirates, etc., against whom it must defend itself, if necessary by force. Since a mercantile society regards warfare as a disagreeable, but unfortunately sometimes unavoidable, activity and not, like a feudal aristocracy, as a form of play, it replaces the old feudal levy by a paid professional army, nonpolitical employees of the State, to whom fighting is their specialized job.
In a professional army, a soldier's military rank is not determined by his social status as a civilian, but by his military efficiency. Unlike the feudal knight who has a civilian home from which he is absent from time to time but to which, between campaigns, he regularly returns, the home of the professional soldier is an army camp and he must go wherever the State sends him. Othello's account of his life as a soldier, passed in exotic landscapes and climates, would have struck Hotspur as unnatural, unchivalrous and no fun.
A professional army has its own experiences and its own code of values which are different from those of civilians. In
Madam, you may relish him more in the soldier than the scholar
is provoked by envy. Iago has excelled him in the euphuistic flirtatious style of conversation which he considers his forte.
Roderigo does not feel at home, either with civilians or with soldiers. He lacks the charm which makes a man a success with the ladies, and the physical courage and heartiness which make a man popular in an army mess. The sympathetic aspect of his character, until Iago destroys it, is a certain humility; he knows that he is a person of no consequence. But for Iago, he would have remained a sort of Bertie Wooster, and one suspects that the notion that Desdemona's heart might he softened by expensive presents was not his own but suggested to him by Iago.
In deceiving Roderigo, Iago has to overcome his consciousness of his inadequacy, to persuade him that he could be what he knows he is not, charming, brave, successful. Consequently, to Roderigo and, I think, to Roderigo only, Iago tells direct lies. The lie may be on a point of fact, as when he tells Roderigo that Othello and Desdemona are not returning to Venice but going to Mauritania, or a lie about the future, for it is obvious that, even if Desdemona is seducible, Roderigo will never be the man. I am inclined to think that the story Iago tells Roderigo about his disappointment over the lieutenancy is a deliberate fabrication. One notices, for example, that he contradicts himself. At first he claims that Othello had appointed Cassio in spite of the request of three great ones of the city who had recommended Iago, but then a few lines later, he says
Preferment goes by letter and affection,
Not by the old gradation where each second
Stood heir to the first.