See also:

• Society: Philosophy: Aesthetics  (70)
• Society: Philosophy: Metaphysics: Ontology  (16)

• Columbia Encyclopedia: Santayana, George - Life, philosophy, and bibliography.
• The Critical Edition of Works by George Santayana - Collecting and publishing a critical edition of the works, edited by Herman J. Saatkamp Jr.
• George Santayana Themes and Sites - Links to a wide range of resources about Santayana and quotations from his works organized by recurring themes in his philosophy, by T.P. Davis.
• Jorge Agustín Nicolás de Santayana - Article and bibliography at the Books and Writers website.
• The Letters of George Santayana Book One - Michael Hodges reviews this book together with the fith volume of The Works of George Santayana. From Notre Dame Philosophical Reviews.
• MSN Learning & Research: Santayana, George - Short biography.
• Stanford University - George Santayana - Entry in the Stanford Encyclopedia by Herman Saatkamp.
• University of Waterloo - Overheard in Seville: Bulletin of the Santayana Society - Journal dedicated to the study of Santayana's life and work. Includes tables of contents, PDF files of many articles.