Iago: Thus do I ever make my fool my purse; For mine own gain'd knowledge should profane, If I would time expend with such a smipe But for my sport and profit. I hate the Moor; And it is thought abroad that 'twixt my sheets He has done my office: I know not if't be true; But I for mere suspicion in that kind Will do as if for surety. He holds me well; The better shall my purpose work on him. Cassio's a proper man: let me see now; To get his place, and to plume up my will In double knavery--How, how?--Let's see-- After some time, to abuse Othello's ear That he is too familliar with his wife. He hath a person and a smooth dispose To be suspected; framed to make women false. The Moor is of a free and open nature, That thinks men honest that but seem to be so; And will as tenderly be led by the n ose As asses are. I have't. It is engender'd. Hell and night Must bring this monstrous birth to the world's light.The intention is Iagos treachory, and the preceding action was that he just convinced the headstrong and foolish Rodriego to help in his plot to play both sides of the coin in an attempt to destroy both. Very calm and evil delivery..and one of my favorites.