The "Good Upbringing" of Ramon Llull's Blanquerna - Although scholars sometimes eagerly look to Llull's "Book of Blanquerna" for information on elementary and secondary education in medieval Spain, it is at least as interesting for what it can tell us about Llull's cultural ideal. - http://www.illinoismedieval.org/ems/VOL12/12ch8.html
What Was Llull Up To? - For the mathematically inclined. - http://www.mcrit.com/COMSOC/visions/ramon_llull/whatwas_llullupto.htm
From the Middle Ages to Multimedia - A capsule summary of Thessa Lindof's Ph.D. dissertation on Ramon Llull's "Ars Magna" and its significance for present-day theories of communication. - http://www.hum.auc.dk/~thessa/
Lully, Raymond - Short biography. - http://yankeeclassic.com/miskatonic/library/reference/compendium/texts/l/lully.htm
Hebraica Veritas?: Ramón Llull - Two illustrations from an 18th-century edition of his works, linked to a short biography. - http://www.library.upenn.edu/exhibits/cajs/exhibit/llull.html
Knowledge Representation - The cover art for John Sowa's book is Ramon Lull's tree of nature and logic. It is reproduced here, along with Sowa's explanation. - http://www.jfsowa.com/krbook/
The Ecole Glossary: Ramon Llull - Biography of the Catalan mystic and missionary, by Karen Rae Keck. - http://www2.evansville.edu/ecoleweb/glossary/llull.html
The Natural Rhetoric of Ramon Llull - Article on Llull's concept of rhetoric, by Mark D. Johnston. - http://www.luc.edu/publications/medieval/vol3/3ch10.html
Lullus, Reymundus (1235-1312) - Short biography, illustrated by early 16th-century woodcuts. - http://clendening.kumc.edu/dc/rti/diagnostics_1523_lullus.html
Ramon Lull Chronology - A historical timeline of his life. - http://www.ralph-abraham.org/ficino/chronos/lull.txt
The Birth of the Machine: Raymundus Lullus and His Invention - Synopsis of an address by Werner Künzel, in which he discusses Lullus's logic machine, its use and abuse by Athanasius Kircher, and its influence on Gottfried Wilhelm Leibniz. - http://www.c3.hu/scca/butterfly/Kunzel/synopsis.html
Raimond Lull - Description of a book in the collection of Dartmouth College, very brief biography of Lull, and a painted portrait. - http://www.dartmouth.edu/~library/Bryant/lull.html
Ramon Llull (1232-1316) - Illustrated biographical essay. Includes short bibliography. - http://www-mat.upc.es/grup_de_grafs/logo/llull_bio.htm
Ramon Lull's Ars Magna - Lull may have been the first to use a mechanical device to generate logical proofs, an early logic machine of his own invention. - http://www.maxmon.com/1274ad.htm
Catholic Encyclopedia: Raymond Lully - Biobibliographical article on Ramon Lull, who is called "Doctor Illuminatus." - http://www.newadvent.org/cathen/12670c.htm