I’m still having problems with exactly what “fullness of the truth” and Sacred Tradition" is. Is there a list of the “fullness of the truth” or Sacred Tradition?
Who determines what these are and by what criteria? For example, who says that these quotes are just Catholic devotions and not part of the fullness of the truth or Sacred Tradition?
Would not these be part of the “fullness of the truth” and Sacred Tradition?
You mean you’ve been on these boards all this time and don’t know what Sacred Tradition actually is? For starters private writings by saints and theologians are not dogmatic in any sense. Nor are they capital T Truth or Sacred Tradition.
The capital-T Truths and Tradition of the Catholic faith are taught first and foremost by its Magisterium - the Pope when speaking infallibly, and Church Councils likewise.
For infallibility to apply there are two conditions. Firstly the intent, express or implied by the context, must be for the Pope or Council to bind the whole church for all times. So disciplines such as large parts of the wording of the Mass, which has changed many times over the centuries, are not infallible Truth. Liturgy is not timeless or changeless for the most part, nor intended to be so.
Secondly the pronouncement must be on a matter of faith and morals. So no-one can infallibly or dogmatically say one football team is better than another for example. Galileo, for instance, didn’t get into trouble for his view that the sun was the centre of the solar system - Copernicus, supported by the church - said exactly the same thing with no problems.
What Galileo did was, if I remember correctly, make some erroneous theological speculations based upon his scientific ideas. That, and the fact that he presented his theories as if they were solidly proven when they weren’t, was what got him into trouble.
Now individual Bishops and priests are infallible only in as far as they are in accord with the Popes and Councils.
Saints and theologians rarely come into the picture at all, except in so far as their views may be used in supporting some infallible doctrine. Saints and theologians disagree with each other continually - if they were all expressing infallible Truth or Sacred Tradition we’d be in a right mess!
Even those saints and theologians who are themselves Popes and Bishops, only ever speak infallibly and expound dogma, doctrine and Tradition, on limited occasions when they meet the criteria outlined above.
Pope Benedict, upon the publication of his latest book
Jesus of Nazareth, explicitly invited discussion, comment and debate about its content precisely because that publication isn’t anything like infallible, nor a dogmatic pronounciation on anything by way of Sacred Tradition.
Hope this clears things up a little.