The following paper is written in memory of Dori Laub, whose presence in my life as colleague, mentor, scholar, and co-author served as a steadfast, validating witness crucial to my ability to own what I know of trauma as a child of Holocaust survivors and as a clinician working with trauma. Much of my work was originally conceived in dialogue with Dori. For years, Dori has served as an extraordinary, insightful, creative, and wise moral force for those in the psychoanalytic community grappling with massive psychic trauma. He articulated a vision of trauma as entailing an undoing of the links between self and empathic other, thereby exposing the inherent dyadic nature of psychic life. In this paper, I discuss his valorization of testimony as a bulwark against erasure, disconnection, and annihilation by its constitution as a form of dialogue that reconstructs the other. Negative valences of testimony are also discussed.