Mediator Dei §36

³⁶ In the spiritual life, consequently, there can be no opposition between the action of God, who pours forth His grace into men's hearts so that the work of the redemption may always abide, and the tireless collaboration of man, who must not render vain the gift of God. No more can the efficacy of the external administration of the sacraments, which comes from the rite itself ( ex opere operato ), be opposed to the meritorious action of their ministers of recipients, which we call the agent's action ( opus operantis ). Similarly, no conflict exists between public prayer and prayers in private, between morality and contemplation, between the ascetical life and devotion to the liturgy. Finally, there is no opposition between the jurisdiction and teaching office of the ecclesiastical hierarchy, and the specifically priestly power exercised in the sacred ministry.