There are two sources of pleasure in contemplation; for, firstly, there is the very act of contemplating, and everyone finds a certain pleasure in the performance of acts which are appropriate to his nature or to his habits. And the contemplation of truth is natural to man as a rational animal; hence it is that "all men naturally desire to know," and consequently find a pleasure in the knowledge of truth. And this pleasure is enhanced according as a man has habits of wisdom and knowledge which enable him to indulge in contemplation without difficulty. Secondly, contemplation is pleasurable owing to the object which we contemplate, as when a man looks at something which he loves. And this holds good of even bodily vision, for not only is the mere exercise of the visual faculties pleasurable, but the seeing people whom we love is pleasurable. Since, then, the contemplative life especially consists in the contemplation of God, to which contemplation we are moved by charity, it follows that the contemplative life is not merely pleasurable by reason of the simple act of contemplating, but also by reason of Divine Love Itself. And in both these respects the delights of contemplation exceed all other human delights. For on the one hand spiritual delights are superior to carnal delights; and on the other hand, the love of Divine charity wherewith we love God exceeds all other love; whence it is said in the Psalm: _Taste and see that the Lord is sweet._[385] Some maintain, however, that contemplation is not pleasurable, thus: 1. Pleasure belongs to the appetitive powers, whereas contemplation is mainly in the intellect. But while the contemplative life mainly consists in the intellect, it derives its principle from the affective powers, since a man is moved to contemplation by love of God. And since the end corresponds to the principle, it follows that the goal and term of the contemplative life is in the affective powers, in the sense, namely, that a man finds a pleasure in the sight of a thing which he loves, and this very pleasure stirs up in him a yet greater love. Hence S. Gregory says[386]: "When a man sees one whom he loves his love is yet more enkindled." And in this lies the full perfection of the contemplative life: that the Divine Truth should not only be seen but loved. 2. Again, strife and contention hinder delight. But in contemplation there is strife and contention, for S. Gregory says[387]: "The soul, when it strives after the contemplation of God, finds itself engaged in a species of combat; at one time it seems to prevail, for by understanding and by feeling it tastes somewhat of the Infinite Light; at other times it is overwhelmed, for when it has tasted it faints."