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Wikipedia: Aesthetics (Or Esthetics)
A Wikipedia Encyclopedia article that defines aesthetics and discusses it in a number of contexts, including literature. A broad definition of the term is provided at the top of the page, and then links are provided to discussions of the...
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Problems of Aesthetics, by Szu Hsien Lee
Defines the term aesthetics in a number of different contexts including both the philosophy of art and the criticism of art. This is a fairly clear discussion of a rather complex topic broken down into a number of subsections. Although...