[Freud and Jung. Cooperation--break--mutual stimulation].

The article tries to throw new light on the Freud/Jung relationship. First, it studies the nature of the fundamental differences between the two theories. Second, it raises the question of what, and how much, each of them took over from the other, and reaches the conclusion that it was Freud who let himself be inspired to a greater degree than Jung did. Third, the stimulating effect of their conflicts and of their break on the respective development of their theories is underlined.