The term ‘measure’ occupies a structurally central position in the depth-psychology corpus, functioning simultaneously as a cosmological principle, a psychological metaphor, and a linguistic-etymological root. Benveniste traces the Indo-European root *med- through Latin, Greek, Celtic, and Iranian cognates, demonstrating that ‘measure’ is not merely quantitative calibration but the authoritative application of a tried and tested remedy to disorder — a finding with profound implications for understanding terms like medicus, medeor, and their psychic analogues. Augustine interrogates the aporia of temporal measure: one cannot measure what has passed or what has not yet arrived, yet measure of time occurs within the soul as impression and memory, locating ‘measure’ irreducibly in interiority. Plotinus positions measure as the ontological problem of Time itself — whether time is a number or measure belonging to Movement, and what such a measure could mean independent of the things it measures. In the early Greek philosophical tradition surveyed by Seaford, metron emerges as the conceptual gift of monetary thinking: Protagoras’ anthropos as metron of all chrēmata, Solon’s metron as the abstract principle holding the limits of all things, and Aristotle’s nomisma as the universal measurer of value. Von Franz and Albertus Magnus invoke the Solomonic triad of measure, number, and weight as a Trinitarian attribution, assigning measure to the Father. These threads — psychic, cosmological, economic, theological — converge on measure as the founding act of intelligibility itself.