The assimilation model is a theory of psychological change that depicts the self as a community of internal voices, composed of traces of the person's experiences. The model suggests that disconnection of certain voices from the community underlies many forms of psychopathology and psychological distress. Such problematic voices may be assimilated through psychotherapeutic dialogue by building meaning bridges. Meaning bridges are signs (e.g., words, images, gestures, narratives) that have similar meaning to author and addressee, that is, to the signs' producer and recipient, which may be different people or interacting internal voices. Building meaning bridges is thus a process of coming to terms with problematic voices, which reduces distress and gives access to experiential resources within the self. This article describes and illustrates meaning bridges, voices, signs, and associated concepts as elaborated in a program of research on the assimilation model.