Summa Theologica
Thomas Aquinas
Summa Theologica - A book resource
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More resources on Medieval Philosophy
Stanford Encyclopedia of Philosophy: Medieval Philosophy
Comprehensive overview and bibliography
The Aquinas
Has modern science made faith in God impossible? Does belief in miracles and traditional dogmas require us to deny scientific evidence, or abandon the scientific method? Does Schrodinger’s cat invalidate the principle of non-contradiction? The Catholic faith does not need to fear contemporary science. In fact, great believing minds have steered the scientific project until today, and still have much to say about the harmony of science and divine faith.
Islamic Golden Age
Exploring the cultural, political, intellectual and scientific achievements of the Islamic Golden Age and the relations between Islam and the West during the height of Muslim power.
fordham.edu/halsall/source
The Internet Medieval Sourcebook (Fordham University) is a freely accessible collection of primary source texts for medieval philosophy and related fields, with translations, introductions, and bibliographies. It features key works by Augustine, Boethius, Anselm, Aquinas, Duns Scotus, and more, organized by author and topic for study and teaching.
aquinas.institute
An online resource hub focused on Thomas Aquinas and medieval philosophy. It features essays, lectures, and course materials covering Thomistic metaphysics, ethics, theology, and scholastic methodology.
muslimphilosophy.com
MuslimPhilosophy.com is a focused online resource on Islamic philosophy, offering biographical sketches of major Muslim philosophers and overviews of key schools and themes. It also provides bibliographies and translations to support study of classical and medieval Islamic thought.