II
In so far as the mind conceives the present existence of its body does it conceive duration which can be determined in time, and so far only has it the power of conceiving things in relation to time. But eternity cannot be manifested through duration, therefore the mind so far has not the power of conceiving things under the form of eternity: but because it is the nature of reason to conceive things under the form of eternity, and because it also pertains to the nature of the mind to conceive the essence of the body under the form of eternity, and excepting these two things nothing else pertains to the nature of the mind, therefore this power of conceiving things under the form of eternity does not pertain to the mind except in so far as it conceives the essence of the body under the form of eternity.
Things are conceived by us as actual in two ways; either in so far as we conceive them to exist with relation to a fixed time and place, or in so far as we conceive them to be contained in God, and to follow from the necessity of the divine nature. But those things which are conceived in this second way as true or real we conceive under the form of eternity, and their ideas involve the eternal and infinite essence of God.
The mind conceives nothing under the form of eternity, unless in so far as it conceives the essence of its body under the form of eternity, that is to say, unless in so far as it is eternal. Therefore in so far as the mind is eternal it has a knowledge of God, which is necessarily adequate, and therefore in so far as it is eternal it is fitted to know all those things which can follow from this knowledge of God, that is to say, it is fitted to know things by the third kind of knowledge of which, in so far as the mind is eternal, it is the adequate or formal cause.
As each person therefore becomes stronger in this kind of knowledge, the more is he conscious of himself and of God; that is to say, the more perfect and the happier he is, a truth which will still more clearly appear from what follows. Here, however, it is to be observed, that although we are now certain that the mind is eternal in so far as it conceives things under the form of eternity, yet, in order that what we wish to prove may be more easily explained and better understood, we shall consider the mind, as we have hitherto done, as if it had just begun to be, and had just begun to understand things under the form of eternity. This we can do without any risk of error, provided only we are careful to conclude nothing except from clear premises.
The third kind of knowledge is eternal, and therefore the love which springs from it is necessarily eternal.
Although this love to God has no beginning, it nevertheless has all the perfections of love, just as if it had originated. Nor is there here any difference, excepting that the mind has eternally possessed these same perfections which we imagined as now accruing to it, and has possessed them with the accompanying idea of God as the eternal cause. And if joy consist in the passage to a greater perfection, blessedness must indeed consist in this, that the mind is endowed with perfection itself.