Abstract
In this chapter, I argue that we can understand how original intentionality (i.e., a genuine mental life) fits into a natural and scientific understanding of the world through an understanding of the import of the intentionality of emotions to our knowledge of the world in which we live. To do so, I first argue that emotions demonstrate our original intentionality (i.e., a genuine mental life). I then explain how the intentionality of emotions is necessary for us to have knowledge of the world in virtue of our emotional responses. I conclude with a brief discussion of how the neuroscience of emotion can help to provide an explanation of how we can know in virtue of our emotional experiences—how epistemology can be naturalized via emotions.