Our ability to think from our intellect and not at the same time from our will is provided us so that we can be reformed, for we are reformed by means of truths; and truths, as already noted, are matters of intellect. We are actually born into total evil as far as our wills are concerned, wishing well to no one but ourselves; if we wish well to ourselves alone, we are delighted when harm comes to others, especially when it is to our advantage. We actually want to channel everyone else’s assets to ourselves, whether those assets are high rank or wealth, and are happy to the extent that we succeed.
To correct and reform this kind of intent, we are given the ability to understand things that are true and to use them to control the evil urges that well up from our will. This is why we can think true things from our intellect and talk about them and do them even though we cannot think them from our will until we have changed in nature so that on our own, that is, from the heart, we intend them and do them. When we have this nature, then the things we think from our intellect are matters of our faith and the things we think from our will are matters of our love. This means that faith and love are now united within us, just as intellect and will are.
from Heaven and Hell, Section 424