Catholics believed in the doctrine of purgatory and that ghosts were the spirits of those returning for some special purpose. These spirits should be aided if possible so that their soul may find rest. The Ghost told Hamlet he is doomed to walk the night "till the foul crimes done in my days of nature are burnt and purg 'd away." (1.5.12-13) The Protestants however denied the doctrine of purgatory and believed that a person 's soul went directly to either heaven or hell. Ghosts were usually regarded as demons, which sought the downfall of their victims, and should be resisted. (Carlson & Peel, 2003, p. 9) Horatio had similar concerns after initial sight of the Ghost, "this bodes some strange eruption to our state." (1.1.72) Another belief was that ghosts could be hallucinations, "an illusion of melancholic minds or flat knavery on the part of some rogue." (Wilson, 1976, p. 63) This theory is quickly refuted in the first Act as it is unlikely that Barnardo, Marcellus, Horatio and Hamlet had all seen a hallucination.
There is no mention of purgatory or praying for the dead within the play. Although the Ghost of Hamlet 's father has died without the last rites being observed, he never asks for prayers for the repose of his soul. "Like some hellish demon, he appears only at night and vanishes before sunrise, demanding only revenge." (McConnell, 2000, p. 107-108) Shakespeare left the state of religion in Denmark ambiguous.
Hamlet accepted the ghost as a spirit, and never shows the slightest sign of hesitation in this belief. What he doubts is the identity of the Ghost and the nature of the place from which it came. Is it truly his father 's spirit or perhaps the devil in disguise? "The spirit that I have seen may be a devil," (2.2.585-586) Hamlet had to be careful before acting on what the Ghost had told him. To do this he had the players
Cited: Andrews, J.F., Hill, W.M. (Ed.). (2001). Shakespeare 's world and work: An encyclopedia for students. New York: Scribner 's. Wilson, J.D., (1976). What happens in Hamlet. New York: Cambridge University Press. Goddard, H. (1951). The meaning of Shakespeare. Chicago: The University of Chicago Press. Milward, P. (1973). Shakespeare 's religious background. Great Britain: The Anchor Press Ltd. Orlin, L.C., Wells, S., (2003). Shakespeare: An Oxford guide. New York: Oxford University Press. Roud, S., Simpson, Dr.J., (2003). Dictionary of English folklore. New York: Oxford University Press. Stoll, E.E. (1960). Shakespeare studies: Historical and comparative in method. New York: Frederick Ungar Publishing Co.