This author read W. R. Bion's (1974) unpublished, personally annotated copy of C. G. Jung's Memories, Dreams, Reflections (MDR). The interest here is to conjoin Bion's reading of Jung with his own contemporaneous work. After setting out a context for Jung and Bion's meeting one another in 1935, we look at Bion's subsequent psychoanalytic development over the decades until 1974, particularly in the area of clinical intuition. The author takes up Bion's clinical seminars in Rio de Janeiro and São Paulo in 1974. He maintains that direct correlations can be made between Bion's marginal comments in MDR and material that he directly lectured on in his 1974 clinical seminars. Bion's interest here centred on the development of clinical intuition, dreams and precocious intellectual development. Even though he never mentioned Jung by name in 1974, it seems that Jung was clearly to the back of his mind as he lectured to his Brazilian colleagues in 1974. The fields of psychoanalysis and analytical psychology can be further enhanced by exploring how Bion and Jung's ideas converge as well as diverge.