down in the genethliatic archives, to foresee, at the second revolution, the return of the events which were already linked there and which must be reproduced?[440] Plato exacts, for the perfection of this great year, that the movement of the fixed stars, which constitutes what we call the precession of the equinoxes, should coincide with the particular movement of the celestial bodies, so as to bring back the heavens to the fixed point of its primitive position.[441] The Brahmans carry the greatest duration of this immense period, which they name _Kalpa_, to 4,320,000,000 of years, and its mean duration, which they name _Maha-Youg_, to 4,320,000.[442] The Chinese appear to restrict it to 432,000 years,[443] and in this they agree with the Chaldeans; but when one reduces it again to a twelfth of this number, with the Egyptians, that is, to the sole revolution of the fixed stars, which they made, according to Hipparchus, 36,000 years, and which we make no more than 25,867, according to modern calculations,[444] we feel indeed that we would be still very far from having a series of observations capable of making us foresee the return of the same events, and that we could not conceive even, how men could ever attain to its mastery. As to the second method, which consists, as I have said, in carrying forward the moral sight upon the route which one has before him, I have no need to observe that it can be only very conjectural and very uncertain, since it depends upon a faculty which man has never possessed except as a special favour of Providence.