It is an error to believe that Christ did not teach a determined body of doctrine applicable to all times and to all men, but rather that He inaugurated a religious movement adapted, or to be adapted, to different times and different places.
Pope Pius XThe proposition that the principal articles of the Apostles' Creed did not have the same meaning for the Christians of the earliest times as they have for Christians of our time is hereby condemned and proscribed as erroneous.
Pope Pius X...the great movement of apostasy being organized in every country for the establishment of a One-World Church which shall have neither dogmas, nor hierarchy, neither discipline for the mind, nor curb for the passions, and which, under the pretext of freedom and human dignity, would bring back to the world (if such a Church could overcome) the reign of legalized cunning and force, and the oppression of the weak, and of all those who toil and suffer. [...] Indeed, the true friends of the people are neither revolutionaries, nor innovators: they are traditionalists.
Pope Pius XTruly we are passing through disastrous times, when we may well make our own the lamentation of the Prophet: "There is no truth, and there is no mercy, and there is no knowledge of God in the land" (Hosea 4:1). Yet in the midst of this tide of evil, the Virgin Most Merciful rises before our eyes like a rainbow, as the arbiter of peace between God and man.
Pope Pius X