In the descriptions of the Otherworld contained in the foregoing visions, the imagery employed evinces a blending of Hebraic traditions with materials obtained from Hellenic sources. The elements attributable to the latter source pertain rather to the popular faith and to the doctrines taught in the ancient mysteries--which, most likely, were fundamentally identical--than to the speculations of the Neo-Platonic schools, or to the cults which had been adopted from the East. This, indeed, is what might have been looked for, from the fact that Christianity received its earliest and most numerous recruits from the people at large,[92] among whom the old beliefs continued to exist. The moral teaching which, as mentioned in an earlier section, was an important feature of the Eleusinian mysteries, retained its importance long after Greece had ceased to be the centre of Hellenic thought throughout the countries which had come under the sway of Hellenic civilisation. In the last century of the Roman Republic Cicero lauds the mysteries, which, by their refining influences, had civilised minds previously rustical and savage, had imparted the true principles of life, and had taught the way, not only to live with joy, but to die with better hope.[93] In the first century of the Empire, Plutarch reminds his wife of the instruction they had shared at their initiation into the mysteries.[94] Indeed, at that period, it would seem to have been looked upon as an impiety to withhold oneself from initiation, that might even be visited with a criminal prosecution. The experiences of Demonax, as related by Lucian, furnish a case in point. Equally great, at least, was the vitality retained by the popular belief in the Stygian river, and the pains of Tartarus that awaited the wicked. There is evidence to show that in the classical and post-classical ages of Greece it was accepted as an article of the national creed. Its persistence at a later date is attested by the vehemence of the onslaught which Lucretius made upon it, for, with due allowance for exaggeration, he could scarcely regard it as an incubus, an ever-present terror, weighing down and darkening men’s lives, an Upas-tree which it was philosophy’s noblest work to uproot, unless it had met with very general and very convinced acceptance in his day. Seneca, indeed, states that in his time the belief was rejected even by children, and herein he is corroborated by other writers; we must conclude, however, that the children in question were exceptionally enlightened--the Roman prototypes of Macaulay’s schoolboy--for in the same century Plutarch, and in the following century Lucian, attests the vigorous survival of the old doctrine.[95]