In scene 7 of Act 4 Lear begs Cordelia to forgive him for his ignorance and blindness against the evils of Goneril and Reagan (4.7 98-99). Lear is driven mad by his betrayal by Goneril and Reagan and believes that Cordelia is an angel in heaven. In one particular section we see a change in Lear's self; in Act 4 scene 7 lines 68-79 and 81-85, Lear cannot believe he is alive and it is Cordelia who saves him (4.7 77-79). Lear tells Cordelia "I know you love me not, for your sisters / You have done me, as I remember, harm. / You have some reason; they have not. At this time Shakespeare does not present Lear as the mighty king as in Act 1, Shakespeare presents him as a vulnerable old man who is at the mercy of his youngest son.