IN making this edition, I found that the essays fell naturally into three Parts. Part I is entirely composed of Three Philosophical Poets, which stands by itself as a unit. Part II is made up of scattered essays on particular authors and works of literature. Part III comprises writings about the nature of poetry and prose in general. The essays are not arranged in the order of their composition, but roughly in accordance with the historical and philosophical continuity of their subject-matter. I have generally left Santayana's material as I found it, though in several instances slight adjustments had to be made. For example, the first sentence of the essay "Hints of Egotism in Goethe" originally appeared as the last lines of the previous chapter in the book Egotism in German Philosophy. It is included in order to give the reader some idea of how Santayana uses the word "transcendentalism." In the selections from The Last Puritan the sub-title "Critical Excerpts" is mine, the excerpts themselves having been included to show how Santayana uses literary criticism as a way of demonstrating the character of Peter Alden, Caleb Wetherbee, and Oliver Alden respectively. The titles "Literary Form" and "Expression in Literature" are also mine, the selections having originally appeared in The Sense of Beauty. Finally, the reader may be interested in knowing that "Speech and Signification" and "Poetry and Prose" are chapters from Reason in Art, "Literary Psychology" is a chapter from Scepticism and Animal Faith, and "Mythology" is a chapter from Reason in Religion.