I am not sure why you decided to bold my quote.
Regardless, I don't look at soteriology as a "science" at all. Salvation is simple and I look at it strictly from the Word of God. Your tradition informs your view of salvation more than Scripture. Because the Catholic church says it is this way you refuse to consider that the men leading the church could have gotten it wrong. This is not only dangerous, but ignores the Scriptural admonitions to always look out for false prophets as well as Jesus' words about what will happen on the day of judgment. In that day many will come to him proclaiming "Haven't we done all of these good works in your name?" And he will tell them to depart for he never knew them.
Take heed. If you are trying to get to heaven based upon your work AT ALL, you will not reach your desired destination.
And all the zillions of Protestants interpreting the Bible as they will didn't or couldn't? There were many who got it wrong. They are called heretics and are no longer part of the Church.
Sorry, but I don't believe things because the Latin church (whose claim to catholicity, as an Orthodox Christian I vigorously dispute) teaches them, but because the Fathers of the Church, some of whom read the Scriptures with the advantage not only of being native speakers of koine Greek, but of being part of the same culture as the Holy Apostles and Evangelists, understand the Scriptures in a given way.
I no more follow the Popes of Rome, save those in ancient times who confessed the Orthodox faith, than I do disobedient German monks, who after 1500 or so years decided that the Scriptures meant something they had never been understood to mean, by introducing false dichotomies into their interpretation, and had the arrogance to throw out books of the Old Testament because the Christ-denying rabbis who met at Jamnia in 90 A.D. hadn't kept them in the Jewish canon.
Take heed yourself: if your faith doesn't bring forth good works, then it's not faith at all.