In Act 1 of Othello, how does Iago use his power of persuasion with Roderigo, Brabantio and Othello to create his scheme to undo the Moor?

Look at Act 1 Scene 3, after close-reading it and the summary. After Desdemona's wish is granted, Roderigo is despairing,feeling he has lost her for ever. Iago sees this and ever-observant and waiting to pounce sees the weaknesses and motivations of the others too. He becomes excited as a plan is sparked - he shares his evil manipulations in his speech at the end of the Act so examine that line by line and use some quotes:

He fills Roderigo with false hopes 'put money in thy purse' (cheer up, get ready to be rich and happy-your fortunes are about to change)

'thou shalt enjoy her'

'Let us be conjunctive in our hate against him'

'thine hast no less reason'

and Iago...tellingly...in 'private'

'thus do I ever make my fool my purse'

'Cassio's a proper man: let me see now to get his place.....'

and about Othello - it will be easy to manipulate him and

have him 'led by the nose as asses are' by putting pressure on his suggestible nature.

Why are they all so blind? Previous question about this below:

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