The development of psychoanalytic technique can be traced in part to the dialogues between Sigmund Freud and Sándor Ferenczi, dialogues that took place in the context of psychoanalysis's encounter with poverty and destitution in the wake of World War I. These dialogues, which served as precursors to contemporary, especially Relational, psychoanalysis, also inspired Freud's call for greater psychoanalytic engagement with the poorest and most vulnerable. This inspired the early psychoanalysts to “sharpen in all directions the sense of social justice” by engaging in political activism, experimenting with clinical technique, and by promoting short-term, more affordable treatments. The relevance of this history for clinical work with diverse populations will be discussed, and aspects of contemporary psychoanalysis (countertransference, enactment, new relational experience) will be understood in light of Freud and Ferenczi's responsiveness to the underprivileged.