2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/50738The relation that exists in quantum mechanics among action variables, angle variables and the phases of quantum states is clarified, by referring to the system of a generalized oscillator. As a by-product, quantum-mechanical meaning of the classical Hamilton-Jacobi equation and related matters is clarified, where a new picture of quantum mechanics is introduced, to be called the Hamilton-Jacobi picture.26 pages, RevTeX(preprint+\tightenlines)High Energy Physics - Theorytext