Carl Jung on “Participation Mystique” – Anthology:
A variety of forms is revealed through the realization of the self. The self is dissolved into many egos. When the self has become conscious it leads to “participation mystique.” ~Carl Jung, Conversations with C.G. Jung, Page 36.

The man who has attained consciousness of the present is solitary. The “modern” man has at all times been so, for every step towards fuller consciousness removes him further from his original, purely animal participation mystique with the herd, from submersion in a common unconsciousness. Every step forward means tearing oneself loose from the maternal womb of unconsciousness in which the mass of men dwells. ~Carl Jung; “The Spiritual Problems of Modern Man” (1928). In CW 10: Civilization in Transition. P. 150

Most connections in the world are not relationships, they are participation mystique. One is then apparently connected, but of course it is never a real connection, it is never a relationship; but it gives the feeling of being one sheep in the flock at least. ~Carl Jung, Visions, p 625.

People with a narrow conscious life exteriorize their unconscious, they are continually in participation mystique with other people… if more unconscious things have become conscious to you, then you live less in participation mystique. ~Carl Jung, Visions, para 1184.

Tantra Yoga gives the classic localizations of thought: anahata, thinking (or localization of consciousness) in the chest region (phrenes); visuddha (localized in the larynx), verbal thinking; and ajna, vision, symbolized by an eye in the forehead, which is attained only when verbal image and object are no longer identical, i.e., when their participation mystique is abolished. ~Carl Jung, Letters Vol. II, Pages 257-264.

The participation mystique by which society contains the individual may be understood as a statement of the fact that individuals are still undifferentiated from each other, that is to say, they have not yet been self-consciously broken up into individual personalities. ~Carl Jung, C.G. Jung Speaking; Interviews and Encounters, Pages 205-218