Within the depth-psychology corpus, ‘discourse’ operates at several irreducible levels simultaneously: ontological, linguistic, clinical, and political. Heidegger establishes the most foundational claim, positioning discourse (Rede) not as a secondary vehicle for pre-formed meaning but as a primordial existential constitutive of Dasein’s Being-in-the-world, coequal with state-of-mind and understanding. This ontological grounding stands in productive tension with Benveniste’s strictly linguistic distinction between discourse and historical narrative — a difference indexed by the deployment of personal verb forms and the presence of a situated subject of enunciation. Lacan absorbs both pressures, treating discourse as the structured field within which desire and the subject of the unconscious are constituted; his sustained readings of the speeches in Plato’s Symposium repeatedly interrogate the register, tone, and function of each interlocutor’s logos, revealing how discourse both conceals and symptomatically betrays the truth of love. Giegerich raises the stakes explicitly for depth psychology, framing the ‘who,’ ‘how,’ and ‘what’ of psychological discourse as problems of logical status and not merely rhetorical manner. Ricoeur and Derrida press the term toward its political and phenomenological limits, with Ricoeur noting the inextricable ties between discourse, power, and systematic distortion of language, and Derrida foregrounding the impossibility of grounding discourse in an originally given presence. Together these voices establish discourse as a site where subjectivity, truth, falsehood, and power are negotiated — a central problematic for any rigorous depth-psychological hermeneutics.