Below is an extract from Mary Shelley's Frankenstein (chapter 24, final letters). At this moment, Walton is recalling in a letter to his sister his encounter with the monster, who is mourning the death of his creator, Frankenstein. (Here, I = Walton.)
"Your repentance," I said, "is now superfluous. If you had listened to the voice of conscience, and heeded the stings of remorse, before you had urged your diabolical vengeance to this extremity, Frankenstein would yet have lived.
"And do you dream?" said the damon; "do you think that I was then dead to agony and remorse?..."
Why does the daemon use the simple present tense here? Is Walton's dreaming not a past event? If it is not, why does the monster not use the progressive tense?