Further I say and further will maintain Upon his bad life to make all this good, That he did plot the Duke of Gloucester's death, Suggest his soon-believing adversaries, And consequently, like a traitor coward, Sluiced out his innocent soul through streams of blood: Which blood, like sacrificing Abel's, cries, Even from the tongueless caverns of the earth, To me for justice and rough chastisement; And, by the glorious worth of my descent, This arm shall do it, or this life be spent.