Near consequences bind as faith articles; remote ones are only theological opinions
Doctrine drawn from Scripture and taught in the schools is of two kinds.
First: what Scripture states expressly, or what follows by nearest, evident consequences. Those should be proposed to the church as articles and heads of faith, subject to the charge of heresy for those who teach the opposite.
Second: what is rightly and soundly drawn from Scripture, yet not so clearly, and by subtler, more remote consequences. Those are not properly articles of faith, but theological truths or opinions. Their contrary should be called error — not heresy.
Rome's own doctors say only what their councils have clearly and expressly defined is de fide — not whatever they think they can weave by chaining consequence upon consequence. So they distinguish faith dogmas from their theologians' opinions: heresy against the first, error against the second.
Latin
XXIII. Quod spectat autem ad doctrinam quae ex Scriptura hauritur, & in scholis proponi solet, vel consistit in iis quae in Scriptura sacra reperiuntur diserte & expresse posita, aut saltem quae ex iis per consequentias proximas & evidentes deducuntur: cujus generis ea esse debent, quae tanquam articuli, & capita fidei credenda Christiano populo proponuntur, cum nota haereseos in illos qui contraria docent. Vel in iis quae quidem ex Scriptura recte & sane deducuntur, sed tamen non ita clare, & evidenter, & per consequentias magis subtiles & remotas: quod genus proprie non sunt articuli fidei, sed veritates, aut opiniones tantum Theologicae, quarum contrarium gravius appellari non debet, quam error, non vero nomine haereseos notari. Quemadmodum Doctores Ecclesiae Romanae ea tantum esse de fide statuunt, quae sunt a Conciliis suis perspicue & expresse definita, non vero quaecunque nectendo consequentias de consequentis ex iis sese recte colligere posse putant. Ideoque distinguunt inter fidei dogmata, & Theologorum suorum placita, atque sententias, prioribus haeresin, posterioribus errorem opponentes.