Enrique Pichon-Rivière, a pioneer of psychoanalysis, worked and wrote in Argentina in the mid-twentieth century, but his work has not so far been translated into English. From the beginning, Pichon-Rivière understood the social applications of analytic thinking, centring his ideas on "el vinculo", which is generally translated as "the link", but could equally be translated as "the bond". The concept that each individual is born into human social links, is shaped by them, and simultaneously contributes to them inextricably ties people's inner worlds to the social world of family and society in which they live. Pichon-Rivière believed, therefore, that family analysis and group and institutional applications of analysis were as important as individual psychoanalysis. Many of the original family and couple therapists from whom our field learned trained with him. Because his work was centred in the analytic writings of Fairbairn and Klein, as well as those of the anthropologist George Herbert Mead and the field theory of Kurt Lewin, his original ideas have important things to teach us today. This article summarises some of his central ideas such as the link, spiral process, the single determinate illness, and the process of therapy.