Here is but one of MANY:
But now apart from the law the righteousness of God has been made known, to which the Law and the Prophets testify. This righteousness is given through faith in Jesus Christ to all who believe. There is no difference between Jew and Gentile, for all have sinned and fall short of the glory of God, and all are justified freely by his grace through the redemption that came by Christ Jesus. God presented Christ as a sacrifice of atonement, through the shedding of his blood—to be received by faith. He did this to demonstrate his righteousness, because in his forbearance he had left the sins committed beforehand unpunished - he did it to demonstrate his righteousness at the present time, so as to be just and the one who justifies those who have faith in Jesus. Where, then, is boasting? It is excluded. Because of what law? The law that requires works? No, because of the law that requires faith. For we maintain that a person is justified by faith apart from the works of the law. (Romans 3:21-28)
It's pretty clear that it is by the grace of God that we are justified/saved/made righteous and that this justification is a GIFT that we receive by faith. At one time, the Roman Catholic Church taught this but it changed over time. Once this truth sinks into ones hearts and we believe God, salvation is ours - because God loves us.
Thoroughly Catholic, and of course it does not teach salvation by faith alone. It makes several points: that righteousness originates with faith; that justification is by grace alone; that “works of the law”, e.g. works done under legal obligation, for a temporal reward, due to the requirements of Jewish faith — do not save. St. Paul never says that justification is by faith apart from ANY works.