Aion was originally published in German in 1951. The central theme of the work he set felt forced to write, the book he notes that "he set it all down in" and was able to speak his "secret language" contained the broadest scope of anything he had ever written. Its time line was the entire Christian aeon of two thousand years from the birth of Christ to the year 2,000 and the second millennium.

In the Forward to Aion, Jung tells us that the theme of the book is the change of the psychic situation in the Christian aeon which coincides with the astrological conception of the Platonic month of the fishes or Pisces. Those familiar with astrology may recognize that the notion of the Platonic month is based on the astronomical procession of the equinoxes. The movement of the sun through each zodiacal sign is called the Platonic month. In the spring equinox of around 1 A.D., the beginning of the Christian aeon, the equinox left the sign of Aries and started into the sign of Pisces. Now, 2,000 years later, it is about to leave the sign of Pisces and enter that of Aquarius.

Aion is about this grand two thousand year cycle and the sequences contained within the cycle. Perhaps the best place to start when approaching Aion is with The Aion Lectures by Edward Edinger. These lectures were given at the Jung Institute of Los Angeles between 1988 and 1989 and, like Edinger's Mysterium lectures, also provide a short type of "Cliff Notes" to help one navigate the complex waters of the work.

As Edinger notes in the Forward to his book, "Jung's Aion laid the foundation for a whole new department of human knowledge, a scholarly discipline one might call archetypal psychohistory." It is a discipline based on the insights of depth psychology to the data of cultural history. "The historical process," writes Edinger, "can now be seen as the self-manifestation of the archetypes of the collective unconscious as they emerge and develop in time and space through the actions and fantasies of humanity.

While it is impossible to do justice to this awesome work in the space we have here, we can briefly touch on the broad symbolism Jung approaches in Aion. Pisces is symbolized by the fish and Aquarius by the water carrier. The contextual symbolism is one between the dualities of inside and outside. The fish (Pisces) is contained within water while a water carrier (Aquarius) cannot be contained within water if he is to be a carrier of water. He (Aquarius) must be outside of the water. The aeon cycle therefore represents a change from being controlled by the container to being outside the container.

The fish may symbolize the psyche and Jung seems to be suggesting that the two eons will have a different relationship to the psyche. Jung might be suggesting that the context we have been discussing will evolve into a content and that a new context for humanity will evolve. The contextual symbolism which now contains humanity may be coming to the end of its cycle. The emerging symbolic struggle is to move out of water. As Edinger suggests in The Aion Lectures, with the coming Age of Aquarius "we have the image of a vessel, an allusion to the symbolism of the alchemical vessel and to the capacity to contain the psyche, rather than be contained by it." Instead of being a fish contained in a psychic fish pond, the individual becomes a conscious dispenser of the psyche.

Edinger suggests that Christ may have foreshadowed the age of the water carrier. Both Mark and Luke recount that Christ directed two of his disciples to make preparations for the last supper saying to them, "Go into the city and you will meet a man carrying a pitcher of water. Follow him." (Mark 14:13 and Luke 22:10) The man leads the disciples to the house in which they are to go to the upper room for the Passover meal of the last supper. And Christ was also seen as a water bearer and water dispenser. To the Samaritan woman at the well he said that if she had asked him for a drink, he would have dispensed eternal living water for her. (John 4:10)

But, as Edinger remarks, the water Christ dispensed did not generate more dispensers. Rather it generated fish contained in the water. The church, Edinger speculates, became the water carrier, the fish pond in which the faithful fish could swim. The great secret knowledge of Jung was the discovery of the containment, the water. "If my reading of the symbolism of Aion is correct," says Edinger, "the aeon of Aquarius will generate individual water carriers." This will mean that the psyche will no longer be carried by religious communities but instead it will be carried by conscious individuals. "This is the idea Jung puts forward in his notion of a continuing incarnation, the idea that individuals are to become the incarnating vessels of the Holy Spirit on an ongoing basis."

In Aion Jung provides the broadest contextual basis for symbolism he ever explored. The symbolic contextualism is the archetype of the God-image (the Self) and how this archetype has progressively revealed itself in the course of the Christian aeon. With the creation of this strange book Jung was finally able to gain a sense of peace in his final years. His secret knowledge was indeed "permitted" to be brought forth into the world. And with it, a foundation for a new science of a symbolism of culture.

(자료출처 http://www.symbolism.org/writing/books/spc/sequence/page5.html)