This paper examines the idea of truth, its place in therapy and in the history of systemic theory. Beginning with some practice fragments, the theory exploration considers the idea of truth in the modernist frame, the paradox of the modernist metaphor in describing the activity of therapy, and the peculiarities of the idea of truth in the earlier systemic therapies. Postmodernist and social constructionist ideas are then explored, and meaning is identified as the concept which currently occupies the place of an idea of truth in systemic discourse. It is argued that meaning as a concept is insufficiently attached to an idea of (external) reality or to an understanding of the relationship of the individual to knowledge of her/his experience of the world. Reclaiming the idea of truth as an emotional and social process has more potential to meet the complexities of human experience in thinking about the process of therapeutic change.