Catholic Integralist. Family man. More children than fingers. Protestant heretic for decades.
May 22 • 13 tweets • 6 min read
Aquinas gave the Church its framework for heresy. Robert Bellarmine gave it the operating manual.
For most of the questions Catholics actually fight about today — what counts as formal heresy, how heretics are identified, what happens if a pope is one — the precise answers come from Bellarmine, not Aquinas.
A thread on the man who built the toolkit.
Robert Bellarmine. Italian Jesuit. Born 1542, died 1621. Canonized 1930. Declared Doctor of the Church the following year.
He was Professor of Controversies at the Roman College — a chair created specifically to systematize the Catholic response to the Reformation. The output of that work was the Disputationes de Controversiis Christianae Fidei adversus Hujus Temporis Haereticos: "Disputations on the Controversies of the Christian Faith Against the Heretics of Our Time." Three volumes, 1586 to 1593.
It is the most thorough Catholic answer to Protestantism ever written. The Church canonized the man and declared him a Doctor specifically because of it.
May 22 • 7 tweets • 4 min read
Aquinas died 243 years before Luther nailed his theses to the door of Wittenberg.
He never met a Protestant. He never wrote a word about one.
But his framework for heresy in the Summa Theologiae is the pastoral key for 2026. Most Protestants are not who their critics imagine. Many are not what their pastors describe either.
A thread.
In Summa II-II Q. 11, St. Thomas distinguishes two kinds of heretic. The distinction is the entire pastoral key.
The material heretic holds error through ignorance — bad catechesis, family upbringing, the air he breathed as a child. He has never been seriously confronted with the truth.
Aquinas insists faith is an act of the will and cannot be coerced. What the Church owes this man is patience, instruction, and prayer.
The grandmother in the Baptist pew who has loved the Lord for sixty years and has never once been told what Trent actually teaches about justification — she is in this category. The Church's posture toward her is maternal. Correct, but with tenderness.
May 18 • 5 tweets • 1 min read
The Didache was written before most Christians had a "Bible."
It had baptism rites. Eucharistic prayers. Bishops. Deacons. Fasting rules. A full liturgical calendar.
The structure Protestants call "Catholic invention" was already running.
A thread.
The Didache opens its baptism instructions with precise requirements: flowing water preferred, specific Trinitarian formula, a preparatory fast.
This is not improvised. This is inherited.
The apostles handed on a *form*. The form was already structured before a single epistle was bound into a canon.
May 10 • 6 tweets • 2 min read
Most Catholics picture angels as chubby cherubs or glowing figures with harps.
Aquinas would have found that embarrassing.
He devoted 15 questions in the Summa Theologiae to angels. Not devotional poetry. Rigorous metaphysics.
A thread on what he actually taught.
Start with the foundation.
Aquinas argues in ST I, Q. 50 that angels are subsistent forms. No matter. No body. No potentiality dragging them toward corruption.
They exist as pure act of intellect.
This isn't poetry. It's the hardest kind of philosophy: substance without extension.
May 8 • 9 tweets • 2 min read
Mormons are Montanist Audians.
The Catholic Church already condemned this heresy. Twice. Once in the 2nd century. Once in the 4th.
Joseph Smith fused them and called it restoration.
A thread.
Around 170 AD in Phrygia, a man named Montanus declared that the Holy Spirit was speaking again.
New revelation, beyond the apostles.
A New Jerusalem to descend at Pepuza in Asia Minor.
A "purer" Christianity, restored over against the bishops.
