He would manipulate and deceive in any way as long as he could destroy God's creation. Satan admits that God was good but his goodness made him feel “miserable” (IV, 73 ) because of his “boasting” (IV, 85). It's likely that God didn't mean to boast, but that doesn't stop the evil that lingers in Satan's mind from thinking that way. Ultimately, Satan forever severs his connection with God when he states, “goodbye, hope; and with hope farewell, fear; Goodbye, remorse, all good is lost for me" (IV, 107-108). Satan bids farewell to who he once was, a god in the sky, and abandons all hope of repentance from God. Instead, he embraces his sinful nature, emphasizing his reluctance to conform to God's intent and that he looks toward "at least from you / Empire divided with the King of Heaven I maintain, / From you, and more than half perhaps will reign.” (IV, 109-111) From here on Satan intends to have his own flag in his own land, hell, which no longer has God in it