In the half-century since his death, the Hungarian analyst Sandor Ferenczi has amassed a large following within the psychoanalytic community. During his lifetime Ferenczi, an associate and friend of Freud, proposed widely disputed ideas that influenced the evolution of modern psychoanalytic technique and practice. This text provides an edited version of Ferenczi's clinical diary. In a sequence of short, condensed entries, it records self-critical reflections on conventional theory - as well as criticisms of Ferenczi's own experiments with technique - and his struggle to divest himself and psychoanalysis of professional hypocrisy.