Sicut agere et velle est voluntarium, ita et non agere et non velle, quia voluntas, volendo et agendo, potest impedire hoc quod est non velle et non agere, et aliquando debet; hoc quod est non velle et non agere, imputatur ei, quasi ab ipsa existens.
Just as to act and to will are voluntary, so also are not to act and not to will, because the will by willing and acting, is able, and sometimes ought, to hinder not-willing and not-acting; this not-willing and not-acting is imputed to, as though proceeding from, the will.
Et sic voluntarium potest esse absque actu, quandoque quidem absque actu exteriori, cum actu interiori, sicut cum vult non agere; aliquando autem et absque actu interiori, sicut cum non vult.
And thus it is that we can have the voluntary without an act; sometimes without outward act, but with an interior act; for instance, when one wills not to act; and sometimes without even an interior act, as when one does not will to act.
Eo modo requiritur ad voluntarium actus cognitionis, sicut et actus voluntatis; ut scilicet sit in potestate alicuius considerare et velle et agere. Et tunc sicut non velle et non agere, cum tempus fuerit, est voluntarium, ita etiam non considerare.
Voluntariness requires an act of knowledge in the same way as it requires an act of will; namely, in order that it be in one's power to consider, to wish and to act. And then, just as not to wish, and not to act, when it is time to wish and to act, is voluntary, so is it voluntary not to consider.