Religious thought -- Middle Ages, 600-1500

See also what's at your library, or elsewhere.

• Religious thought
• Church history -- Middle Ages, 600-1500
• Theology, Doctrinal -- History -- Middle Ages, 600-1500

• The Cell of Self-Knowledge: Seven Early English Mystical Treatises, ed. by Edmund Garratt Gardner
  • HTML at CCEL
  • Gutenberg text
• Illustrations of the History of Medieval Thought and Learning (second edition; London: Society for Promoting Christian Knowledge, 1920), by Reginald Lane Poole (PDF at Stanford)

Items below (if any) are from related and broader terms.

• Man in Search of His Soul During Fifty Thousand Years and How He Found It!, by Gerald Massey (HTML in the UK)

• An Apology for the True Christian Divinity, by Robert Barclay, ed. by Licia Kuenning (HTML at qhpress.org)
• An Apology for the True Christian Divinity: Being an Explanation and Vindication of the Principles and Doctrines of the People Called Quakers, by Robert Barclay (multiple formats at CCEL)
• Four Discourses Delivered to the Clergy of the Diocess of Sarum (London: Printed for Richard Chiswell, 1694), by Gilbert Burnet (multiple formats at Google)
• Thoughts, by Blaise Pascal, trans. by W. F. Trotter
  • HTML at Fordham
  • HTML at Bartleby
• Thoughts; Letters; Minor Works (Harvard Classics edition; New York: P. F. Collier and Son, c1910), by Blaise Pascal, ed. by O. W. Wight, trans. by W. F. Trotter and Mary L. Booth (page images at HathiTrust)

• Indian Origins and the Book of Mormon (c1986), by Dan Vogel (HTML at Signature Books)

• The Cause and Cure of Infidelity: Including a Notice of the Author's Unbelief and the Means of His Rescue (second stereotype edition; New York: American tract society, c1841), by David Nelson (page images at HathiTrust)
• Christianity the Religion of Nature, by Andrew P. Peabody (page images at MOA)
• The Errors of Modern Infidelity, Illustrated and Refuted (Philadelphia: Grigg, Elliot and Co., 1848), by Samuel M. Smucker (multiple formats at Google)
• Faith with Reason: Why Christianity is True (c2002), by Joseph R. Farinaccio (PDF at cmfnow.com)
• Historic Doubts Respecting Shakspeare, Illustrating Infidel Objections Against the Bible (new edition of "The Errors of Modern Infidelity"; 1853), by Samuel M. Smucker (multiple formats at Google)
• Lectures in Defence of the Christian Faith (4th edition; Edinburgh: T. and T. Clark, n.d.), by Frédéric Louis Godet, trans. by W. H. Lyttelton
  • multiple formats at Google; US access only
  • multiple formats at archive.org
  • page images at HathiTrust; US access only
• Lectures on the Evidences of Christianity, by Mark Hopkins (page images at MOA)
• Lectures on the Evidences of Christianity, Delivered in Philadelphia, ed. by Alonzo Potter (page images at MOA)
• Liberalism: Its Cause and Cure (electronic edition, 2010), by Gregory Lee Jackson (PDF at dropbox.com)
• Making Your Faith Your Own: A Guidebook for Believers With Questions (c2001), by Teresa Vining (HTML with commentary at Evangelical Christian Library)
• Manual of the Evidences of Christianity, For Classes and Private Reading, by S. G. Bulfinch (page images at MOA)
• Orthodoxy, by G. K. Chesterton
  • HTML at CCEL
  • Gutenberg text
• The Religion of the Future (New York: American Tract Society, c1894), by David James Burrell (multiple formats at archive.org)
• The Religion of the Plain Man, by Robert Hugh Benson (HTML at Notre Dame)
• Searching for Truth (second edition; New York: Peter Eckler, c1902), by George Otis Draper (multiple formats at archive.org)
• Themes for the Diligent, by Nicola Yacoub Ghabril (HTML at path-of-peace.org)
• The Third Day, by Arnold Lunn (HTML at EWTN)
• War of the Worldviews (Petersburg, KY: Answers in Genesis, 2005), contrib. by Ken Ham, Bodie Hodge, Carl Kerby, Jason Lisle, Stacia McKeever, David Menton, Terry Mortenson, Georgia Purdom, and Mike Riddle (illustrated HTML with commentary at answersingenesis.org)

• Ad Nationes, by Tertullian (text at EWTN)
• Address of Tatian to the Greeks (with fragments, and notes), by Tatian, trans. by Jonathan Edwards Ryland (HTML at CCEL)
• Adversus Marcionem (in Latin and English, with notes), by Tertullian, trans. by Ernest Evans (HTML at tertullian.org)
• Against Celsus (8 books; commentary appears between Book IV and Book V), by Origen (HTML with commentary at CCEL)
• Against Marcion, by Tertullian, trans. by Peter Holmes (HTML with commentary at CCEL)
• An Answer to the Jews, by Tertullian, trans. by Sydney Thelwall (HTML with commentary at CCEL)
• The Apocriticus of Macarius Magnes (Greek portions omitted), by Macarius Magnes, ed. by T. W. Crafer (HTML at tertullian.org)
• The Apology (from an 1851 edition), by Tertullian, trans. by Temple Chevallier (HTML at tertullian.org)
• The Apology (from an 1889 reprint of a 1709 translation), by Tertullian, trans. by William Reeve (HTML at tertullian.org)
• The Apology, by Tertullian, trans. by Sydney Thelwall (HTML with commentary at CCEL)
• An Apology for the True Christian Divinity, by Robert Barclay, ed. by Licia Kuenning (HTML at qhpress.org)
• An Apology for the True Christian Divinity: Being an Explanation and Vindication of the Principles and Doctrines of the People Called Quakers, by Robert Barclay (multiple formats at CCEL)
• The Apology of Tertullian for the Christians (London and Oxford: Parker and Co., 1890), by Tertullian, trans. by T. Herbert Bindley (HTML at tertullian.org)
• An Appeal to All that Doubt, or Disbelieve the Truths of the Gospel, by William Law (HTML at CCEL)
• The City of God, by Saint Augustine (HTML at CCEL)
• Dialogue With Trypho, by Justin Martyr (HTML at CCEL)
• Evidences of Christianity (London: W. Clowes and Sons, 1851), by William Paley (multiple formats at CCEL)
• Exhortation to the Heathen (Protrepticus), by Clement of Alexandria (HTML at CCEL)
• First Apology, by Justin Martyr (HTML at CCEL)
• Four Discourses Delivered to the Clergy of the Diocess of Sarum (London: Printed for Richard Chiswell, 1694), by Gilbert Burnet (multiple formats at Google)
• Observations on Man, His Frame, His Duty, and His Expectations (sixth edition; London: Printed for Thomas Tegg and Son, 1834), by David Hartley (page images at Google)
• The Octavius of Minucius Felix, by Marcus Minucius Felix (HTML with commentary at CCEL)
• Of God and His Creatures (annotated, abridged translation of the Summa Contra Gentiles), by Saint Thomas Aquinas, ed. by Joseph Rickaby (HTML at Notre Dame)
• Pensées, by Blaise Pascal, trans. by W. F. Trotter
  • HTML at CCEL
  • HTML at orst.edu
• A Plea for the Christians, by Athenagoras of Athens, trans. by Benjamin Plummer Pratten (HTML with commentary at CCEL)
• Preparation for the Gospel, by Eusebius of Caesarea, ed. by Roger Pearse, trans. by Edwin Hamilton Gifford (HTML at tertullian.org)
• Select Treatises of S. Athanasius, Archbishop of Alexandria, in Controversy With the Arians (Oxford: James Parker and Co., 1877), by Saint Athanasius, ed. by John Henry Newman (HTML at newmanreader.org)
• Select Treatises of S. Athanasius, in Controversy With the Arians (London: Longmans, Green and Co., 1903), by Saint Athanasius, ed. by John Henry Newman
  • Volume I: HTML at newmanreader.org
  • Volume II: HTML at newmanreader.org
• The Seven Books of Arnobius Against the Heathen, by Arnobius of Sicca, trans. by Hamilton Bryce and Hugh Campbell (HTML at CCEL)
• The Soul's Testimony, by Tertullian, trans. by Sydney Thelwall (HTML with commentary at CCEL)
• The Stromata, or Miscellanies, by Clement of Alexandria (HTML with commentary at CCEL)
• Tertullian On the Testimony of the Soul and On the "Prescription" of Heretics (SPCK, 1914), by Tertullian, trans. by T. Herbert Bindley (HTML at tertullian.org)
• Thoughts, by Blaise Pascal, trans. by W. F. Trotter
  • HTML at Fordham
  • HTML at Bartleby
• Thoughts; Letters; Minor Works (Harvard Classics edition; New York: P. F. Collier and Son, c1910), by Blaise Pascal, ed. by O. W. Wight, trans. by W. F. Trotter and Mary L. Booth (page images at HathiTrust)
• To Scapula, by Tertullian, trans. by Sydney Thelwall (HTML with commentary at CCEL)

More items available under broader and related terms at left.