Quia Catholicae veritatis doctor non solum provectos debet instruere, sed ad eum pertinet etiam incipientes erudire, secundum illud Apostoli I ad Corinth. III: tanquam parvulis in Christo, lac vobis potum dedi, non escam; propositum nostrae intentionis in hoc opere est, ea quae ad Christianam religionem pertinent, eo modo tradere, secundum quod congruit ad eruditionem incipientium.
Because the Teacher of Catholic truth ought not only to teach the proficient, but also to instruct beginners, according to the Apostle: As unto little ones in Christ, I gave you milk to drink, not meat (1 Cor 3:1–2), we purpose in this book to treat of whatever belongs to the Christian religion in such a way as may befit the instruction of beginners.
Consideravimus namque huius doctrinae novitios, in his quae a diversis conscripta sunt, plurimum impediri, partim quidem propter multiplicationem inutilium quaestionum, articulorum et argumentorum; partim etiam quia ea quae sunt necessaria talibus ad sciendum, non traduntur secundum ordinem disciplinae, sed secundum quod requirebat librorum expositio, vel secundum quod se praebebat occasio disputandi; partim quidem quia eorundem frequens repetitio et fastidium et confusionem generabat in animis auditorum.
We have considered that novices in this doctrine have often been hampered by what they have found written by various authors, partly on account of the multiplication of useless questions, articles, and arguments; partly also because the things such novices need to know are not taught according to the order of the discipline, but according as was needed for commenting on books, or according as an opportunity for raising a disputed question presented itself; partly, too, because frequent repetition of the same things brought weariness and confusion to the minds of the readers.