Roderigo's obsession and love for Desdemona makes him vulnerable to manipulation. Roderigo is very embarrassed, as Brabantio tells him, "in all honesty, you heard me say/My daughter is not for you", he has been rejected by Brabantio every time he asks to marry Desdemona. Roderigo has been in love with Desdemona for a long time, he tries to give her “jewels”, but he always ends up empty-handed. He is also oblivious because he tried so hard to win over Desdemona and Othello didn't try at all. Therefore, he is prone to manipulation and obeys Iago because he "promises" that he will get Desdemona for him. Iago promises that if he “puts some money in your bag” he can “profit from it.” In contrast, Iago's main intention is to use Roderigo as a source of money because he claims that Roderigo is "my fool, my purse." Furthermore, Iago uses Roderigo's gullible and naive nature for his own selfish means; “If you dare to make a profit and a right…you can take it as you wish.” He tells Roderigo to catch Cassio "to profit you", ironically only Iago will profit. Additionally, cleverly, Iago makes Roderigo feel intelligent and respected as he flatters him for his intelligence, "your suspicions are not due to judgment and wit", therefore he thinks that obeying Iago will help him achieve his goals.