Oral Formulaic Theory, the scholarly framework originating with Milman Parry and extended by Albert Lord, occupies a distinctive if oblique position within the depth-psychology library. The corpus engages the theory principally as a hermeneutic instrument for understanding the cognitive and psychological conditions of pre-literate mentality rather than as a narrowly philological matter. Havelock’s Preface to Plato stands as the most sustained treatment, arguing that the formulaic style of oral composition was not merely a technical convenience but constituted ‘a cast of thought, or a mental condition’ — a thesis with direct implications for depth psychology’s interest in pre-rational, imagistic, and mythopoeic consciousness. Nagy extends this analysis into the mechanics of Homeric economy, while Lattimore situates the theory within debates about composition-in-performance and the interpretive weight of formulaic epithets. Abram brings an ecological-phenomenological inflection, contextualizing Parry and Lord within broader contrasts between oral and literate sensoriality. Sullivan treats formulaic language as a practical constraint on, and resource for, the transmission of psychological and ethical ideas in archaic Greek verse. Across these voices, a central tension persists: whether the formula imprisons or enables meaning, whether it signals mechanical constraint or participatory, mnemonic, and even unconscious intelligence.