Consider this, also from Hobbes' Leviathan, in 1668:
Part IV. Of the Kingdom of DarknessChap. xlvii. Of the Benefit that proceedeth from such Darkness
[21] ...For from the time that the Bishop of Rome had gotten to be acknowledged for bishop universal, by pretence of succsession to St. Peter, their whole hierarchy (or kingdom of darkness) may be compared not unfitly to the kingdom of fairies (that is, to the old wives' fables in England, concerning ghosts and spirits and the feats they play in the night). And if a man consider the original of this ecclesiastical dominion, he will easily perceive that the Papacy is no other than the ghost of the deceased Roman empire sitting crowned upon the grave thereof. For so did the Papacy start out of the ruins of that heathen power.
[22] The language also which they use (both in the churches and in theirpublic acts) being Latin, which is not commonly used by any nationnow in the world, what is it but the ghost of the old Roman language?
[23] The fairies, in what nation soever they converse, have but one universal king, which some poets of ours call King Oberon; but the Scripture calls Beelzebub, prince of demons. The ecclesiastics likewise, in whose dominions soever they be found, acknowledge but one universla king, the Pope.
[24] The ecclesiastics are spiritual men and ghostly fathers. The fairies and ghosts inhabit darkness, solitudes, and graves. The ecclesiastics walk in obscurity of doctrine, in monasteries, churches, and church-yards.
Hobbes might be a classic philosopher, but as most upper class brits of his day, he was an anti papist. He also was lacking in much of the knowledge of history now known to modern scholars but not known in his time.
So what does the anti papest bigot lacking in historical knowledge have to do with the history of Haloween, a celtic festival that was "baptized" because of it's positive aspects into a Christian feast?
Or do you (a proclaimed athiest) still believe in leprechauns? Or Devils? Or are you posting because you are trying to provoke people?
From a sociological and psychological point of view, Halloween can be very positive for children, if they are encouraged to dress up like heroes (to emulate) or as villans and ghosts (as a way of learning to control the subconscious fear of the unknown. Like laughing in the dark when you are scared.
If there is a devil, he has no sense of humor. So dressing as a humerous fake devil by children is not going to harm them. And allowing little kids to dress up and "scare" their neighbors in exchange for food can be and has been a positive way of getting to know one's neighbors and letting the kids have a good time. (two more things that an evil being would not benefit from)
However, in areas where evil is glamourized as "fun", Haloween may indeed be separated from it's positive side and descend into a true night of evil....