Cardinal Newman on Conscience
It seems, then, that there are extreme cases in which Conscience may come into collision with the word of a Pope, and is to be followed in spite of that word
Conscience is a messenger from Him, who, both in nature and in grace, speaks to us behind a veil, and teaches and rules us by His representatives. Conscience is the aboriginal Vicar of Christ, a prophet in its informations, a monarch in its peremptoriness, a priest in its blessings and anathemas, and, even though the eternal priesthood throughout the Church could cease to be, in it the sacerdotal principle would remain and would have a sway.
John Henry Cardinal Newman, from a letter to the Duke of Norfolk.
Also quoted in the Catechism of the Catholic Church, revised edition 1999, Article 1778 ****
St Thomas Aquinas on Obedience
“Now sometimes the things commanded by a superior are against God, therefore superiors are not to be obeyed in all things.” - St. Thomas Aquinas, Doctor of the Church, in the Summa Theoligica II-IIQ. 104
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Archbishop Fulton J. Sheen on the role of the people in the church
Who is going to save our Church? Not our bishops, not our priests and religious. It is up to you, the people. You have the minds, the eyes, the ears to save the Church. Your mission is to see that your priests act like priests, your bishops, like bishops, and your religious act like religious.
Ratzinger said the like, and the same applies to obeying the OT magisterium, dissent from which was a capital offense, (Dt. 17:8-13) as well as to civil courts, to which general submission is also enjoined.
However, you are confusing what must be allowed, if fallible (and can apply to pro-choice Caths), and what is required for faithfulness to the RC church, which (imaginatively) claims protection from (at least) salvific error. Thus citing conscience (as Luther did) will not make you an obedient RC in her sight.