Jansenius: the blessed love God most freely; their necessity comes from the perfection of their freedom
In his account the proper signs of true freedom are doing what the agent likes, what pleases him, what seems good to him.
From this he concludes that the blessed in heaven, loving the God they see clearly, move themselves most perfectly, hold the most perfect command over their act, and so are supremely free. With the fullest and calmest judgment they judge that God must be loved by them, and they judge that in this they judge most soundly. Their will, in loving, wants to follow reason, wants to want this, and does not want to stop.
Whatever necessity shows in that act comes from the will itself and from the perfection of its mastery and freedom. The will creates that necessity for itself by moving and determining itself, not in the manner of nature but in the manner of the most perfect freedom.
Latin
XXXIII. Nam juxta ipsum, verae libertatis propria indicia sunt facere quod agenti lubet, quod ei placet, quod ei videtur. Unde colligit Beatos in coelo in diligendo Deum, quem clare vident, perfectissime seipsos movere, & perfectissimum sui actus dominium habere, & ita liberrimos esse, quia plenissimo & tranquillissimo judicio judicant sibi diligendum esse Deum, & in eo se sanissime judicare judicant; eorum vero voluntas amando, rationem sequi vult, & hoc se velle vult, ac cessare non vult. Quae vero necessitas in actu illo apparet, ab ipsa voluntate, & Dominii ac libertatis ejus perfectione proficiscitur, quia ipsa sibi necessitatem facit, non per modum naturae, sed perfectissimae libertatis, movendo & determinando se.