Steiner's principle that the seven post-Atlantean epochs mirror each other across the central fourth, so the Egyptian third reawakens in our fifth.
The Law of Repetition of Epochs in Anthroposophy is Rudolf Steiner's structural principle, set out in Egyptian Myths and Mysteries (GA 106, 1908), that the seven post-Atlantean cultural epochs mirror one another across the central fourth. The first Indian epoch returns in the seventh, the second Persian epoch in the sixth, and the third Egypto-Chaldean epoch reawakens in our own fifth, while the fourth Greco-Roman epoch stands alone with no parallel. Because the same human souls reincarnate through every epoch, the soul-content deposited in one age re-emerges as the religious instincts, artistic forms, and inner inclinations of its mirror-age. Steiner reads the Egyptian Isis cult resurfacing in the Renaissance Madonna, and the Egyptian binding of souls to mummified bodies returning as the modern materialist attachment to the physical, as worked examples of this mirroring across the whole cycle.
The Law of Repetition of Epochs is the rule Steiner gives for how the seven post-Atlantean cultural epochs relate to one another. They are arranged symmetrically around the fourth, so that the first returns in the seventh, the second in the sixth, and the third in the fifth. The fourth, the Greco-Roman epoch, has no mirror. Because souls reincarnate through the whole sequence, each epoch reawakens the buried soul-content of the age it reflects.
In Steiner's Own Words
If we begin by looking at the first period, that of the Indian culture, we will find that this first culture later recrudesces in a new form in the seventh period. Ancient India will then appear in a new form. Mysterious forces are at work here. And the second period, which we have called the Persian, will appear again in the sixth period. After our own culture perishes, we will see the Zarathustra religion revive in the culture of the sixth period. And in the course of these lectures we will see how, in our own fifth period, there takes place a sort of reawakening of the third period, the Egyptian. The fourth period stands in the middle; it is peculiar to itself, and neither earlier nor later does it have a parallel.
What it Means Today
The clearest contemporary parallel sits not in physics but in the philosophy of history. Giambattista Vico, in The New Science (Scienza Nuova, second edition 1730, expanded 1744), argued that nations pass through a fixed sequence of ages, the divine, the heroic, and the human, and then enter a ricorso, a recurrence in which the cycle begins again on a new turn. Vico was a Neapolitan jurist writing a full century before Steiner, and his ricorsi are not flat circles. Each return carries forward what the prior cycle deposited, so the second age of gods is not the first repeated but the first transposed. That structure, recurrence that is also advance, is the same shape as Steiner's law. Where Vico tracks the recurrence through law, language, and civic institution, Steiner tracks it through the reincarnating soul, which is why the Egyptian who once bound his dead to the mummy reappears, for Steiner, as the modern mind bound to the measurable physical world.
Thalira synthesis: read this way, the Law of Repetition of Epochs is Vico's ricorso rotated from the outer institution onto the inner biography of the soul, so that what a civilization once practiced in stone, a later age now carries as a private inclination of feeling and thought.
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