The article sets the discussion of Islamic art within the very animated discussions of the last few decades by many prominent scholars that have sought to pinpoint its nature and that have highlighted the twin dangers of over-generalisation and too narrow a focus. Given that the parameters of the discussion have undergone radical change, and the need to revise traditional paradigms, the article confines itself to Islamic art in the medieval period and the central Islamic lands, especially through the prism of nature. Problems of definition and of the usefulness of medieval texts, and the roles of abstraction and contemplation, are reviewed in turn and the article ends with an attempt to define more closely the aesthetics of a single branch of Islamic art, namely medieval Persian book painting.