In this paper, I shall demonstrate the value of the concept of literary thickness - i.e. form-content inseparability - As a tool of literary appreciation. I set out the relationships between non-fiction, fiction, literature, and poetry in Section 1 and sketch a preliminary definition of literary thickness in Section 2. I argue that a convincing account of reference in literary fictions can be provided by means of literary thickness in Sections 3 and 4. I argue that the match between authorial intention and reader response characteristic of the experience of literary works is explained by literary thickness in Section 5. In Section 6, I test the usefulness of the concept of literary thickness against Peter Carey's True History of the Kelly Gang.