"There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy."-- Hamlet After William Shakespeare's Horatio sees the ghost of Hamlet's father, and scarcely believes his own eyes, Hamlet tells him that there is more to reality than he can know or imagine, including ghosts. Hamlet's statement suggests that the walls of the material world, which we perceive with our senses and analyze with our intellects,...