Disappointment is perhaps the most frequent of all the occasional causes of insanity; but the sudden kindling of hope sometimes produces the same lamentable effect. Yet before this emotion, congenial as it is to the human mind, can exert so fatal an influence, the expected good must be of immeasurable magnitude, and must appear in the light of the strongest probability; nor must even the vagueness of a distant futurity intervene; otherwise, tho swellings of desire and joy would be quelled, and reason might maintain its seat. On this principle perhaps it is, that the vast and highly exciting hope of immortal life very rarely, even in susceptible minds, generates that kind of emotion which brings with it the hazard of mental derangement. Religious madness, when it occurs, is most often the madness of despondency. But if the glories of heaven might, by any means, and in contravention of the established order of things, be brought out from the dimness and concealment of the unseen world, and be placed ostensibly on this side of the darkness and coldness of death, and be linked with objects familiarly known, they might then press so forcibly upon the passion of hope, and so inflame excitable imaginations, that real insanity, or an approach towards it, would probably, in frequent instances, be the consequence. A provision against mischiefs of this kind is evidently contained in the extreme reserve of the Scriptures on all subjects connected with the unseen world. This reserve is so singular, and so extraordinary, seeing that the Jewish poets, prophets and preachers, were Asiatics, that it affords no trivial proof of the divine origination of the books: an intelligent advocate of the Bible would choose to rest an argument rather upon the paucity of its discoveries, than upon their plenitude. But now a confident and dogmatical interpretation of those prophecies that are supposed to be on the eve of fulfilment, has manifestly a tendency thus to bring forth the wonders of the unseen world, and to connect them in sensible contact with the familiar objects and events of the present state. And such interpretations may be held with so full and overwhelming a persuasion of their truth, that heaven and its splendors may seem to stand at the door of our very homes: to-morrow, perhaps, the hastening crisis of the nations shall lift the veil which so long has hidden the brightness of the eternal throne from mortal eyes: each turn of public affairs, a war, a truce, a conspiracy, a royal marriage, may be the immediate precursor of that new era, wherein it shall no longer be true, as heretofore, that "the things eternal are unseen."