25 In this We have another proof that in view of the grave problems of Mexico, it must not be said that Catholic Action holds a place of secondary importance. If ever this institution, which is the educator of consciences and the former of moral qualities, were set aside in favor of another extrinsic work of whatsoever species, even if it were a case of defending necessary religious and civil liberty, it would be a sad mistake; because the salvation of Mexico, as of all human society, lies above all in the eternal and immutable evangelical doctrine and in the sincere practice of Christian morals.
Source: Firmissimam Constantiam (Vatican.va)