26 And the beautiful words of Bishop St. Ambrose should give you sure hope and unwavering courage: "Hold on to the tiller of faith so that the rough winds of this world may not bandy you. The sea is vast and large, but do not fear; for he has established it (the earth) upon the water, and set it firmly upon the rivers . And so it is understandable that the Lord's Church stands unmoved among the waves of this world, for she is built on the apostolic rock and holds fast to her foundation, unmoved by the onslaughts of the raging sea. She is battered by the surf, but is not shaken. The physical elements of this world crash with thunder about her, but she provides a safe port for those who toil on the deep."
Source: Meminisse Iuvat (Vatican.va)