Saturn
Saturn is the principle of form and consequence: the boundary that gives a thing shape, the discipline that turns effort into mastery over time. It governs structure, responsibility, and the slow rewards of patience — the teacher who asks for work before it grants authority — and it rules Capricorn, the sign of the long climb.
Heavy-handed, Saturn becomes fear, rigidity, or a coldness that mistakes restriction for wisdom. At its best, it is integrity and endurance — the maturity that builds what lasts by respecting what limits demand.