The ego will be torn between these two opposites of sensuality and spirituality and will try to keep to the middle ground. This middle ground then becomes tremendously important because the combination of spirituality/sensuality which forms is a genuinely new product.
Samuels provides the canonical exposition of the transcendent function as the production of a genuinely new, mediatory element arising from the tension between conscious and unconscious opposites.
, Jung and the Post-Jungians, 1985thesis