May be so, if that scholar was able to convince that, catholics also believe in salvation by grace alone and not by regular church attendance or doing good works.
Martin Luther wouldn’t have compromised on Sola Scriptures. He wouldn’t have accepted any other writings equal to/comparable to scripture.
Good Works
**2447 **The
works of mercy are charitable actions by which we come to the aid of our neighbor in his spiritual and bodily necessities. Instructing, advising, consoling, comforting are spiritual works of mercy, as are forgiving and bearing wrongs patiently. The corporal works of mercy consist especially in feeding the hungry, sheltering the homeless, clothing the naked, visiting the sick and imprisoned, and burying the dead. Among all these, giving alms to the poor is one of the chief witnesses to fraternal charity: it is also a work of justice pleasing to God:
*He who has two coats, let him share with him who has none and he who has food must do likewise. But give for alms those things which are within; and behold, everything is clean for you. If a brother or sister is ill-clad and in lack of daily food, and one of you says to them, “Go in peace, be warmed and filled,” without giving them the things needed for the body, what does it profit? *
**1815 **The gift of faith remains in one who has not sinned against it. But “faith apart from works is dead”: when it is deprived of hope and love, faith does not fully unite the believer to Christ and does not make him a living member of his Body.
**50 **By natural reason man can know God with certainty, on the basis of his works. But there is another order of knowledge, which man cannot possibly arrive at by his own powers: the order of divine Revelation. Through an utterly free decision, God has revealed himself and given himself to man. This he does by revealing the mystery, his plan of loving goodness, formed from all eternity in Christ, for the benefit of all men. God has fully revealed this plan by sending us his beloved Son, our Lord Jesus Christ, and the Holy Spirit.
**2005 **Since it belongs to the supernatural order, grace
escapes our experience and cannot be known except by faith. We cannot therefore rely on our feelings or our works to conclude that we are justified and saved. However, according to the Lord’s words “Thus you will know them by their fruits”- reflection on God’s blessings in our life and in the lives of the saints offers us a guarantee that grace is at work in us and spurs us on to an ever greater faith and an attitude of trustful poverty.
*A pleasing illustration of this attitude is found in the reply of St. Joan of Arc to a question posed as a trap by her ecclesiastical judges: “Asked if she knew that she was in God’s grace, she replied: ‘If I am not, may it please God to put me in it; if I am, may it please God to keep me there.’” *
Sacred Scripture
**111 **But since Sacred Scripture is inspired, there is another and no less important principle of correct interpretation, without which Scripture would remain a dead letter. “Sacred Scripture must be read and interpreted in the light of the same Spirit by whom it was written.”
**104 **In Sacred Scripture, the Church constantly finds her nourishment and her strength, for she welcomes it not as a human word, “but as what it really is, the word of God”. “In the sacred books, the Father who is in heaven comes lovingly to meet his children, and talks with them.”
**105 **
God is the author of Sacred Scripture. “The divinely revealed realities, which are contained and presented in the text of Sacred Scripture, have been written down under the inspiration of the Holy Spirit.”
**2064 **In fidelity to Scripture and in conformity with the example of Jesus, the tradition of the Church has acknowledged the primordial importance and significance of the Decalogue.