Desdemona's Jealousy

Jealousy is a major theme in Othello and it is what drives Othello to commit his heinous deed of killing Desdemona. Othello claims to be a man who "loved not wisely, but too well;of one not easily jealous..."(V.ii.347).

Whilst it is true that his misplaced trust in "honest" Iago and the "ocular proof" of Desdemona's infidelity drive this play to its tragic end, initially Othello does not show any signs of jealousy and is fully aware of Desdemona's friendship with Cassio which, until Iago starts his manipulative scheming, is not a concern for Othello because he knows that Desdemona "had eyes and chose me" (III.iii.189). Iago is all too aware of Othello's " constant, loving, noble nature” which he will use against him to incite his jealousy.
Iago is such a strong personality and has everyone fooled - for most of the play- and his own jealousy appears to be the motivation for his destruction of Othello - and everyone else along the way "I do suspect the lusty Moor." Othello gives him no cause to suspect him but Iago will get his revenge " wife for wife"
You can lead into the most planned part of your essay - the thesis statement. Ask yourself what the purpose of your essay is. In this instance, you are trying to convince the reader of your essay about Othello's jealousy and, presumably, how it is his undoing. You could add a general fact if it will reinforce your statement such as - Othello, and many more before him and still more after him , become so overcome and self-absorbed by their jealousy that communication fails and common sense has no place in a world of overwhelming coincidences and the schemes of others (in this case