12 We have expressly recalled some features of the past that Catholics might not be dismayed by the present. Substantially the struggle is ever the same: Jesus Christ is always exposed to the contradictions of the world, and the same means are always used by modern enemies of Christianity, means old in principle and scarcely modified in form; but the same means of defence are also clearly indicated to Christians of the present day by our apologists, our doctors and our martyrs. What they have done it is incumbent upon us to do in our turn. Let us therefore place above all else the glory of God and of His Church; let us work for her with an assiduity at once constant and effective, and leave all care of success to Jesus Christ, who tells us: "In the world you shall have distress: but have confidence, I have overcome the world."(5)
Source: Au Milieu Des Sollicitudes (Vatican.va)