Jansenius: operating grace makes the first good will
Thesis LIV. Jansenius, bishop of Ypres, explains operating and cooperating grace in much the same way. 'Operating grace,' he says, 'is the grace that by itself, with no prior effort, prayer or merit on man's part, works the will, or the willing, by which the will is made good from bad and just from unjust.
Cooperating grace is the grace that cooperates with a man who already wills and strives, by enlarging that will and strengthening it to firmness, so that he may accomplish and complete what he has willed and is striving for.'
In the same place he teaches from Augustine that operating grace is the grace by which, when we did not will before, we are brought to will; and cooperating grace the grace by which, when we already actually will, we are brought to will more strongly, so that by overcoming every obstacle we also actually do it. The first works so that we have a good will, a willing of good, in some way or other; the second, so that this good will may be enlarged and strengthened.
From this he concludes that cooperating grace is never spoken of with respect to the first good will, when the will's power breaks out into it, since that first will, or good volition, is the effect of operating grace alone. It is spoken of only with respect to good will after a person has begun to will, so that this willing may last, grow and be enriched with good works as with fruit.
Latin
LIV. Non dissimili modo Gratiam operantem & cooperantem explicat Jansenius Episcopus Iprensis. Gratia, inquit, operans est illa quae sola sine studio, sine oratione, sine merito hominis praecedente, voluntatem, seu velle operatur, per quod voluntas ex mala fit bona, & ex injusta justa. Cooperans vero quae homini jam volenti, conantique cooperatur, firmam illam augendo roborandoque voluntatem, ut id efficiat & perficiat quod voluerit & conatur. Ibidemque ex Augustino docet gratiam operantem esse, qua cum ante nollemus, efficitur ut velimus: cooperantem, qua quando jam actu volumus, efficitur ut fortius velimus, ita ut superando quaevis obstacula, etiam reipsa faciamus. Illam operari ut quoquomodo voluntatem bonam, seu velle bonum habeamus: hanc ut illa bona voluntas augeatur & roboretur. Unde colligit cooperantem gratiam nunquam dici respectu primae voluntatis bonae, quando in eam erumpit potentia voluntatis, quoniam illa prima voluntas, seu volitio bona, est solius gratiae operantis effectus, sed solum respectu bonae voluntatis postquam homo jam velle coepit, ut illud velle perseveret, augeatur, bonisque operibus velut fructibus cumuletur.