 Emotions and attitudes form the very foundation of Locke's philosophy of value: undoubtedly, one reason that Locke was so enamored with the spirituals was that as he understood them their primary artistic virtue was their deeply emotive character. “Emotionally,” he points out, “these songs are far from simple” (NN 205). There is to be found in the spiritual folk music of the American Negro the entire range of human moods and emotions, and within a given spiritual there can be a drastic change in mood from the deepest sorrow to glorious praise, as each and every song is infused with religious sentiment. Surprisingly, when it comes to the problem of classification of the spirituals, Locke does not insist upon the primary mode of classification being the feeling-quality of the song as his value theory might suggest. In fact, Locke argues that