| 1st.—Satya-yug | 1,728,000 | years. |
| 2d.—Trêtya yug | 1,296,000 | years. |
| 3d.—Dvâpa yug | 864,000 | years. |
| 4th.—Kali yug | 432,000 | years. |
| Total | 4,320,000 |
which make one divine age or Maha-yug; seventy-one Maha-yugs make 306,720,000 years, to which is added a sandhi (or the time when day and night border on each other, morning and evening twilight), equal to a Satya-yug, 1,728,000, make a manwantara of 308,448,000 years;[101] fourteen manwantaras make 4,318,272,000 years; to which must be added a sandhi to begin the kalpa, 1,728,000 years, making the kalpa or grand period of 4,320,000,000 of years. As we are now only in the Kali-yug of the twenty-eighth age of the seventh manwantara of 308,448,000 years, we have yet sufficient time before us to wait before we reach even half of the time allotted to the world.
These ciphers are not fanciful, but founded upon actual astronomical calculations, as has been demonstrated by S. Davis.[102] Many a scientist, Higgins among others, notwithstanding their researches, has been utterly perplexed as to which of these was the secret cycle. Bunsen has demonstrated that the Egyptian priests, who made the cyclic notations, kept them always in the profoundest mystery.[103] Perhaps their difficulty arose from the fact that the calculations of the ancients applied equally to the spiritual progress of humanity as to the physical. It will not be difficult to understand the close correspondence drawn by the ancients between the cycles of nature and of mankind, if we keep in mind their belief in the constant and all-potent influences of the planets upon the fortunes of humanity. Higgins justly believed that the cycle of the Indian system, of 432,000, is the true key of the secret cycle. But his failure in trying to decipher it was made apparent; for as it pertained to the mystery of the creation, this cycle was the most inviolable of all. It was repeated in symbolic figures only in the Chaldean Book of Numbers, the original of which, if now extant, is certainly not to be found in libraries, as it formed one of the most ancient Books of Hermes,[104] the number of which is at present undetermined.
Calculating by the secret period of the Great Neros and the Hindu Kalpas, some kabalists, mathematicians and archæologists who knew naught of the secret computations made the above number of 21,000 years to be 24,000 years, for the length of the great year, as it was to the renewal only of our globe that they thought the last period of 6,000 years applied. Higgins gives as a reason for it, that it was anciently thought that the equinoxes preceded only after the rate of 2,000, not 2,160, years in a sign; for thus it would allow for the length of the great year four times 6,000 or 24,000 years. “Hence,” he says, “might arise their immensely-lengthened cycles; because, it would be the same with this great year as with the common year, till it travelled round an immensely-lengthened circle, when it would come to the old point again.” He therefore accounts for the 24,000 in the following manner: “If the angle which the plane of the ecliptic makes with the plane of the equator had decreased gradually and regularly, as it was till very lately supposed to do, the two planes would have coincided in about ten ages, 6,000 years; in ten ages, 6,000 years more, the sun would have been situated relatively to the Southern Hemisphere as he is now to the Northern; in ten ages, 6,000 years more, the two planes would coincide again; and, in ten ages, 6,000 years more, he would be situated as he is now, after a lapse of about twenty-four or twenty-five thousand years in all. When the sun arrived at the equator, the ten ages or six thousand years would end, and the world would be destroyed by fire; when he arrived at the southern point, it would be destroyed by water. And thus, it would be destroyed at the end of every 6,000 years, or ten neroses.”[105]
This method of calculating by the neroses, without allowing any consideration for the secrecy in which the ancient philosophers, who were exclusively of the sacerdotal order, held their knowledge, gave rise to the greatest errors. It led the Jews, as well as some of the Christian Platonists, to maintain that the world would be destroyed at the end of six thousand years. Gale shows how firmly this belief was rooted in the Jews. It has also led modern scientists to discredit entirely the hypothesis of the ancients. It has given rise to the formation of different religious sects, which, like the Adventists of our century, are always living in the expectation of the approaching destruction of the world.
As our planet revolves once every year around the sun and at the same time turns once in every twenty-four hours upon its own axis, thus traversing minor circles within a larger one, so is the work of the smaller cyclic periods accomplished and recommenced, within the Great Saros.
The revolution of the physical world, according to the ancient doctrine, is attended by a like revolution in the world of intellect—the spiritual evolution of the world proceeding in cycles, like the physical one.
Thus we see in history a regular alternation of ebb and flow in the tide of human progress. The great kingdoms and empires of the world, after reaching the culmination of their greatness, descend again, in accordance with the same law by which they ascended; till, having reached the lowest point, humanity reasserts itself and mounts up once more, the height of its attainment being, by this law of ascending progression by cycles, somewhat higher than the point from which it had before descended.
The division of the history of mankind into Golden, Silver, Copper and Iron Ages, is not a fiction. We see the same thing in the literature of peoples. An age of great inspiration and unconscious productiveness is invariably followed by an age of criticism and consciousness. The one affords material for the analyzing and critical intellect of the other.
Thus, all those great characters who tower like giants in the history of mankind, like Buddha-Siddârtha, and Jesus, in the realm of spiritual, and Alexander the Macedonian and Napoleon the Great, in the realm of physical conquests, were but reflexed images of human types which had existed ten thousand years before, in the preceding decimillennium, reproduced by the mysterious powers controlling the destinies of our world. There is no prominent character in all the annals of sacred or profane history whose prototype we cannot find in the half-fictitious and half-real traditions of bygone religions and mythologies. As the star, glimmering at an immeasurable distance above our heads, in the boundless immensity of the sky, reflects itself in the smooth waters of a lake, so does the imagery of men of the antediluvian ages reflect itself in the periods we can embrace in an historical retrospect.