If we take the Ascendant as the exact mid-point between the unconscious womb world and the conscious outer world, it would then seem logical that when these are in balance or in a state of timelessness, the trinitarian principle operates and the third member of the psyche “The Collective Unconscious” comes into play. Within the collective unconscious there exist the Great Archetypes and there is some evidence to show that these are twelve in number and that they correspond to the symbolic images allocated to the signs of the zodiac…. It seems natural then, that as the child passes through the timeless zone at the moment of birth, the active archetype of that period claims it for its own and impresses its qualities upon it.
from “Time Alone Can Tell,” Journal of Astrological Studies, Vol. 1, p. 193)