If I tell you the Marquis will die, will you smile?
And laugh when he's dead?--This powder, my lily,
That seems but an innocent sweet in this phial--
Do not touch it! breathe distant!--a poison Exili
Used a life to discover. Its formula left
To a pupil (well worthy the master!), the prudent
And pious Sainte Croix. Him, of teacher bereft,
The Devil, I deem, must have taken as student.