- Mercurius
From Jung's Collected Works 13 Alchemical Studies
481 The confrontation with the unconscious usually begins in the realm of the personal unconscious, that is, of personally acquired contents which constitute the shadow, and from there leads to archetypal symbols which represent the collective unconscious. The aim of the confrontation is to abolish the dissociation. In order to reach this goal, either nature herself or medical intervention precipitates the conflict of opposites without which no union is possible. This means not only bringing the conflict to consciousness; it also involves an experience of a special kind, namely, the recognition of an alien "other" in oneself, or the objective presence of another will. The alchemists, with astonishing accuracy, called this barely understandable thing Mercurius, in which concept they included all the statements which mythology and natural philosophy had ever made about him: he is God, daemon, person, thing, and the innermost secret in man; psychic as well as somatic. He is himself the source of all opposites, since he is duplex and utriusque capax ("capable of both"). This elusive entity symbolizes the unconscious in every particular, and a correct assessment of symbols leads to direct confrontation with it.
