Unus Mundus

   Jung conjectured therefore that the two poles of matter and psyche at the deepest level become one, in the sense of the existence of an unus mundus in which matter and spirit, outer and inner are no longer separate.  In actual psychological experience a distinction between the two realms is unavoidable; in the realm of the deeper layers of the collective unconscious, however, no such distinction can be made with a high degree of certainty.  P&R 92  (picture to go with it).

The observation of synchronistic phenomena leads us to surmise that a latent unitary reality, which Jung called unus mundus, exists beneath the above-described poles of instinct and spirit, or matter and spirit. 

When the sphere of the unus mundus is activated for any reason, its latent energy is expressed in a double manifestation: in the realm of what we call matter and can ascertain or establish by means of physiologically mediated sense-perception and as image suddenly emerging from the spiritual pole into consciousness and whose meaning is identical with what is observed externally.  This dual manifestation recalls the fact (that) a double phenomenon also becomes evident in the process of projection: the bullet or the arrow of passion (instinct) by which the one who is projecting feels himself directly affected and the image that is thrown outwards and that he thinks he sees externally.  P&R 92