The term ‘Stream’ circulates through the depth-psychology corpus in three principal registers, each carrying distinctive philosophical weight. First, and most persistently, the stream functions as an archetypal image of temporal flux and psychic continuity — most forcefully articulated in Heraclitus’s dictum that ‘one cannot step twice into the same river,’ which McGilchrist deploys in The Master and His Emissary to argue that stability in experience is always the stability of form through which material perpetually passes. Second, the stream appears as a metaphor for consciousness itself: Stein, reading Jung, distinguishes the ego as a ‘point or dot that dips into the stream of consciousness,’ differentiating egoic awareness from the broader flow it inhabits but does not control. Jung himself, in Memories, Dreams, Reflections, employs the image with characteristic humility — positioning himself not as the stream but as one who stands at the stream’s edge. Third, in The Red Book, the stream becomes a visionary-infernal space through which archetypal contents travel — bloody heads, scarabs, serpents — marking the unconscious underworld as a flowing medium of terrifying revelation. A fourth, therapeutic usage appears in ACT literature (Harris), where the ‘Leaves on a Stream’ exercise instrumentalizes the metaphor for defusion practice. These registers — ontological, psychological, clinical, and visionary — constitute the term’s full semantic range in the corpus.