Quote from : The Night Side of Nature Book

It will seem to many persons very inconsistent with their ideas of the dignity of a spirit that they should appear and act in the manner I have described, and shall describe further; and I have heard it objected that we cannot suppose God would permit the dead to return merely to frighten the living, and that it is showing Him little reverence to imagine He would suffer them to come on such trifling errands, or demean themselves in so undignified a fashion. But God permits men of all degrees of wickedness, and of every kind of absurdity, to exist, and to harass and disturb the earth, whilst they expose themselves to its obloquy or its ridicule.