Scholastic Synthesis: Albertus Magnus, Thomas Aquinas, and the Bridge Between Reason, Science, and Faith

By Eben van Tonder, 9 Dec 2024

Introduction

Albertus Magnus, renowned as the Doctor Universalis, holds a unique place in history as the scholar who bridged the gap between ancient philosophy, emerging science, and Christian theology. In his tireless work to reconcile Aristotle’s philosophy with the tenets of faith, Albertus laid the groundwork for an intellectual revolution that would shape medieval thought and inspire generations of scholars. However, his influence did not end with his own writings. Through his guidance and teachings, Albertus Magnus mentored Thomas Aquinas, one of the most profound theological and philosophical minds of the Western tradition.

Thomas Aquinas, under Albertus’s tutelage, refined and expanded upon the Aristotelian-Christian synthesis. While Albertus introduced the empirical rigor of Aristotle’s natural philosophy into theological discourse, Aquinas systematized it, creating a coherent framework in which reason and faith harmoniously coexisted. Together, their work provided a lasting foundation for Scholasticism—a movement that sought to unify science, philosophy, and divine revelation, setting the stage for the Renaissance and the Scientific Revolution.

This article explores the legacy of Albertus Magnus, his monumental achievements in science and philosophy, and the profound influence he exerted on Thomas Aquinas. By examining their combined contributions, we uncover the enduring impact of these two great thinkers on the intellectual and spiritual development of Western civilization.

Section 1: Albertus Magnus

1. Albertus Magnus’ Context and Influence

Albertus Magnus (c. 1200–1280), known as Doctor Universalis, was a German Dominican friar and one of the greatest medieval scholars. He is renowned for synthesizing the works of Aristotle with Christian theology and paving the way for his student, Thomas Aquinas, to achieve even deeper philosophical integration.

2. Plato and Aristotle: Key Differences

Albertus Magnus worked extensively on Aristotle’s philosophy, which contrasted significantly with Plato’s thought. Below is a comparison of their methods, reasoning, and practical influence:

Example of Reasoning:

Plato: To understand courage, one contemplates the universal Form of Courage. The concept exists independently of specific courageous acts.

Aristotle: To understand courage, one observes acts of bravery in battle, analyzes their qualities, and then generalizes a definition based on real-world examples.

Albertus Magnus heavily favored Aristotle’s empirical and systematic methods, applying them to study the natural world.

3. Byzantine Scholars and Aristotle’s Revival

During the Middle Ages, much of Aristotle’s work had been lost in Western Europe but preserved by Byzantine scholars in the Eastern Roman Empire. These scholars translated Aristotle’s works into Greek and preserved them in manuscripts.

Why Were Byzantine Scholars Experts?

1. Preservation of Ancient Texts: The Byzantine Empire maintained a continuous scholarly tradition from antiquity. Cities like Constantinople housed manuscripts of Aristotle’s works when they were forgotten in the Latin West.

2. Translations into Arabic and Back into Latin: During the Islamic Golden Age (8th–13th centuries), Arab scholars such as Avicenna (Ibn Sina) and Averroes (Ibn Rushd) translated Aristotle’s works into Arabic. These Arabic texts, often enriched with commentaries, were reintroduced to Europe through translations into Latin by scholars like Gerard of Cremona.

3. Expertise in Logic and Philosophy: Byzantine scholars studied Aristotle’s logical works (Organon), which greatly influenced theological debates, philosophy, and early scientific inquiry.

4. Reunion with Western Scholars: After the Fourth Crusade (1204), when Crusaders sacked Constantinople, many Greek manuscripts entered Europe, fueling the Scholastic movement.

Impact on Albertus Magnus: By accessing these translations, Albertus could reconcile Aristotle’s philosophy with Christian doctrine, applying it to logic, ethics, and natural science.

4. Albertus Magnus and the Natural World

Albertus Magnus applied Aristotle’s empirical methods to study the natural world, distinguishing himself as an early scientist. His works covered botany, minerals, animals, and the relationship between life, matter, and faith.

Botany and the Study of Plants

In De Vegetabilibus et Plantis, Albertus examined plants empirically, describing their anatomy, properties, and practical uses.

He classified plants based on their observed characteristics, such as habitat, medicinal value, and growth patterns.

Example:
He studied the effects of salts and soils on plant growth, distinguishing between natural and artificial salts and their roles in agriculture. His attention to observation prefigured modern agricultural science.

Minerals and Salts

In De Mineralibus, Albertus analyzed minerals and salts, categorizing them and describing their extraction, properties, and industrial applications.

He experimented with alchemical methods, documenting how salts could change substances—a precursor to early chemistry.

Practical Impact:
This work laid the foundation for mineralogy and influenced later alchemists and natural scientists. It showed how science could serve practical purposes, such as improving farming and metallurgy.

Life and Faith

Albertus saw no contradiction between science and faith. Instead, he argued that understanding the natural world revealed the rational order of God’s creation.

By studying plants, animals, and minerals, humans could appreciate the divine logos (order).

His integration of Aristotle’s causality (formal, material, efficient, and final causes) with Christian theology emphasized that God was the First Cause who set nature in motion.

5. Practical Differences in Science and Theology

Albertus Magnus’ work had the following effects on practical knowledge and theology:

1. Empirical Observation: He advanced practical, observational science, influencing fields like biology, mineralogy, and botany. His reliance on Aristotle’s inductive reasoning made science more grounded in reality.

2. Faith and Reason Reconciled: By combining Aristotle’s natural philosophy with Christian theology, he demonstrated that scientific inquiry did not undermine faith but enriched it.

3. Foundation for Scholasticism: Albertus provided a methodological basis for later Scholastics, especially Thomas Aquinas, to align reason and divine revelation.

4. Influence on Agriculture and Industry: His studies of plants, minerals, and salts had tangible applications, such as improving agriculture and metallurgy.

Conclusion

Albertus Magnus stands as a pivotal figure who revived Aristotle’s empirical methods and applied them to science while remaining deeply committed to his faith. His work bridged ancient Greek philosophy, Byzantine scholarship, and Christian theology, laying the foundation for both Scholasticism and the early scientific revolution.

By choosing Aristotle’s methods over Plato’s abstract idealism, Albertus gave medieval scholars a practical toolkit for studying nature, fostering the development of fields like botany, mineralogy, and natural theology. His synthesis of science and faith continues to inspire the idea that empirical inquiry and spiritual belief can coexist harmoniously.


Section 2: Dissertation: Thomas Aquinas – Philosopher, Theologian, and Pillar of Scholasticism

Chapter 1: Introduction

Thomas Aquinas (1225–1274) was a Dominican friar, theologian, and philosopher whose work laid the foundation for much of Western theology and philosophy. Known as the greatest thinker of the Scholastic period, Aquinas systematically combined Aristotelian philosophy with Christian theology, creating a comprehensive synthesis that has endured for centuries. His contributions, especially the Summa Theologica, continue to influence theology, philosophy, and science. This dissertation explores his life, his influences, his role in Scholastic thinking, and his enduring legacy.

Chapter 2: Who Was Thomas Aquinas?

2.1 Early Life and Education

Born in Roccasecca, Italy, Thomas Aquinas was of noble lineage. At age five, he began his education at the Benedictine monastery of Monte Cassino. He later studied at the University of Naples, where he was exposed to Aristotle’s works. Despite familial resistance, he joined the Dominican Order, committing his life to poverty and scholarship. He studied under Albertus Magnus, who deeply influenced his approach to philosophy and theology.

2.2 Teaching and Writing

Thomas became a prolific scholar and teacher, lecturing across Europe at institutions like the University of Paris. His primary works include:

Summa Theologica: A comprehensive theological treatise addressing Christian doctrine.

Summa Contra Gentiles: A defense of Christian faith against non-believers.

Numerous commentaries on Aristotle and Scripture.

2.3 Death and Canonization

Aquinas died in 1274 en route to the Council of Lyons. He was canonized as a saint in 1323, and in 1567, he was named a Doctor of the Church.

Chapter 3: Aquinas’ Influences

3.1 Aristotle

Aristotle’s rediscovery through Arabic translations profoundly influenced Aquinas. While earlier medieval thought relied heavily on Plato and Augustine, Aquinas adopted Aristotle’s:

Empiricism: Knowledge stems from the senses.

Metaphysics: Distinction between act and potency.

Logic: Deductive reasoning as a tool for theological truths.

3.2 Augustine

From Augustine, Aquinas inherited a deep focus on faith and grace, though he diverged by emphasizing reason’s role in understanding God.

3.3 Islamic and Jewish Thinkers

Aquinas engaged with Averroes, Avicenna, and Maimonides, incorporating their interpretations of Aristotle into his theological synthesis.

Chapter 4: Thomas Aquinas and Scholasticism

4.1 Scholastic Method

Scholasticism aimed to reconcile faith and reason, a task Aquinas perfected. His method followed:

1. Question: Address a specific topic.

2. Objections: Present opposing viewpoints.

3. Response: Offer a clear, reasoned conclusion.

4. Refutation: Rebut objections.

This approach structured the Summa Theologica and became central to medieval intellectual tradition.

4.2 Integration of Faith and Reason

Aquinas argued that faith and reason are not contradictory but complementary:

Reason can prove God’s existence (Five Ways).

Faith completes what reason cannot grasp, such as the Trinity.

Chapter 5: Aquinas’ Integration of Aristotle into Western Thought

5.1 Bridging Classical Philosophy and Theology

Prior to Aquinas, Aristotle’s works were viewed with suspicion in the Christian world. Aquinas demonstrated how:

Aristotle’s natural philosophy aligned with Christian cosmology.

Metaphysics could explain creation, causality, and the nature of God.

For example, Aquinas used Aristotle’s concepts of “act” and “potency” to explain God as the Unmoved Mover.

5.2 The Five Ways

Aquinas developed five rational proofs for God’s existence, relying heavily on Aristotelian thought:

1. Motion: God as the first cause of movement.

2. Causality: God as the uncaused cause.

3. Contingency: God as the necessary being.

4. Perfection: God as the ultimate perfection.

5. Teleology: God as the intelligent designer.

Chapter 6: Aquinas on Logic and Scripture

6.1 View on Logic

Aquinas saw logic as an essential tool for theology. Drawing on Aristotle, he believed reason could clarify faith and resolve apparent contradictions. His method elevated logical argumentation in theological debates.

6.2 View on Scripture

For Aquinas, Scripture was the ultimate source of divine truth. However:

He employed literal and allegorical interpretations.

He maintained that reason aids in understanding Scripture’s deeper meanings.

Theology, as sacra doctrina, involved using Scripture and natural reason to know God.

Chapter 7: Role in the Church

7.1 Theological Authority

Aquinas’ work helped the Church articulate doctrine, particularly on:

The nature of God and the Trinity.

Sacraments: Especially transubstantiation, where Aristotelian metaphysics underpins his explanation of the Eucharist.

Moral philosophy: Integrating virtue ethics into Christian ethics.

7.2 Influence on Councils

The Council of Trent (1545–1563) relied heavily on Aquinas’ Summa to counter Protestant theology.

Chapter 8: Influence on Later Thinkers, Theologians, and Scientists

8.1 Theological Legacy

Aquinas became the cornerstone of Thomism, a school of thought still influential in Catholic theology. Figures like Robert Bellarmine and John Henry Newman drew upon his works.

8.2 Impact on Philosophy

Renaissance Humanism: Aquinas’ emphasis on reason inspired later thinkers like Descartes and Leibniz.

Modern Philosophy: His synthesis influenced rationalism and empiricism.

8.3 Contributions to Science

By affirming the harmony of faith and reason, Aquinas paved the way for scientific inquiry. His reliance on observation aligns with the scientific method later formalized by thinkers like Francis Bacon and Galileo.

Chapter 9: Aquinas’ Impact on the Reformation

9.1 Critique of Aquinas by Reformers

While Aquinas’ authority was upheld in Catholicism, Reformers like Martin Luther rejected his reliance on Aristotelian logic:

Luther criticized Aquinas’ “over-intellectualized” approach to faith.

The Reformers emphasized sola scriptura over reason.

9.2 Indirect Influence

Despite criticism, Aquinas influenced the Reformers indirectly:

His moral philosophy shaped Protestant ethical frameworks.

His exploration of grace and free will informed debates on salvation.

9.3 Counter-Reformation

In response to Protestantism, the Catholic Church leaned heavily on Aquinas’ works to defend doctrine. His ideas became a bulwark of Catholic orthodoxy.

Chapter 10: Conclusion

Thomas Aquinas remains one of the most significant figures in Western intellectual history. His ability to synthesize Aristotle’s philosophy with Christian theology set a precedent for reconciling faith and reason. Aquinas’ legacy extends beyond theology into philosophy, science, and ethics, influencing thinkers across generations. While Reformers challenged his methods, his work became central to the Catholic Church’s identity during the Counter-Reformation.

The enduring relevance of Aquinas lies in his systematic approach, logical precision, and unwavering commitment to truth. By building a bridge between ancient philosophy and Christian doctrine, he shaped the intellectual framework of the medieval world and beyond.

Bibliography

Aquinas, Thomas. Summa Theologica. Translated by Fathers of the English Dominican Province.

Gilson, Etienne. The Christian Philosophy of Thomas Aquinas.

Copleston, Frederick. A History of Philosophy: Medieval Philosophy.

Pieper, Josef. Guide to Thomas Aquinas.

Weisheipl, James A. Thomas Aquinas and the Role of the Church.

Wippel, John F. The Metaphysical Thought of Thomas Aquinas.

Luther, Martin. The Bondage of the Will.

Gonzalez, Justo L. A History of Christian Thought.

Dissertation: Thomas Aquinas – Philosopher, Theologian, and Pillar of Scholasticism

Chapter 1: Introduction

Thomas Aquinas (1225–1274) was a Dominican friar, theologian, and philosopher whose work laid the foundation for much of Western theology and philosophy. Known as the greatest thinker of the Scholastic period, Aquinas systematically combined Aristotelian philosophy with Christian theology, creating a comprehensive synthesis that has endured for centuries. His contributions, especially the Summa Theologica, continue to influence theology, philosophy, and science. This dissertation explores his life, his influences, his role in Scholastic thinking, and his enduring legacy.

Chapter 2: Who Was Thomas Aquinas?

2.1 Early Life and Education

Born in Roccasecca, Italy, Thomas Aquinas was of noble lineage. At age five, he began his education at the Benedictine monastery of Monte Cassino. He later studied at the University of Naples, where he was exposed to Aristotle’s works. Despite familial resistance, he joined the Dominican Order, committing his life to poverty and scholarship. He studied under Albertus Magnus, who deeply influenced his approach to philosophy and theology.

2.2 Teaching and Writing

Thomas became a prolific scholar and teacher, lecturing across Europe at institutions like the University of Paris. His primary works include:

Summa Theologica: A comprehensive theological treatise addressing Christian doctrine.

Summa Contra Gentiles: A defense of Christian faith against non-believers.

Numerous commentaries on Aristotle and Scripture.

2.3 Death and Canonization

Aquinas died in 1274 en route to the Council of Lyons. He was canonized as a saint in 1323, and in 1567, he was named a Doctor of the Church.

Chapter 3: Aquinas’ Influences

3.1 Aristotle

Aristotle’s rediscovery through Arabic translations profoundly influenced Aquinas. While earlier medieval thought relied heavily on Plato and Augustine, Aquinas adopted Aristotle’s:

Empiricism: Knowledge stems from the senses.

Metaphysics: Distinction between act and potency.

Logic: Deductive reasoning as a tool for theological truths.

3.2 Augustine

From Augustine, Aquinas inherited a deep focus on faith and grace, though he diverged by emphasizing reason’s role in understanding God.

3.3 Islamic and Jewish Thinkers

Aquinas engaged with Averroes, Avicenna, and Maimonides, incorporating their interpretations of Aristotle into his theological synthesis.

Chapter 4: Thomas Aquinas and Scholasticism

4.1 Scholastic Method

Scholasticism aimed to reconcile faith and reason, a task Aquinas perfected. His method followed:

1. Question: Address a specific topic.

2. Objections: Present opposing viewpoints.

3. Response: Offer a clear, reasoned conclusion.

4. Refutation: Rebut objections.

This approach structured the Summa Theologica and became central to medieval intellectual tradition.

4.2 Integration of Faith and Reason

Aquinas argued that faith and reason are not contradictory but complementary:

Reason can prove God’s existence (Five Ways).

Faith completes what reason cannot grasp, such as the Trinity.

Chapter 5: Aquinas’ Integration of Aristotle into Western Thought

5.1 Bridging Classical Philosophy and Theology

Prior to Aquinas, Aristotle’s works were viewed with suspicion in the Christian world. Aquinas demonstrated how:

Aristotle’s natural philosophy aligned with Christian cosmology.

Metaphysics could explain creation, causality, and the nature of God.

For example, Aquinas used Aristotle’s concepts of “act” and “potency” to explain God as the Unmoved Mover.

5.2 The Five Ways

Aquinas developed five rational proofs for God’s existence, relying heavily on Aristotelian thought:

1. Motion: God as the first cause of movement.

2. Causality: God as the uncaused cause.

3. Contingency: God as the necessary being.

4. Perfection: God as the ultimate perfection.

5. Teleology: God as the intelligent designer.

Chapter 6: Aquinas on Logic and Scripture

6.1 View on Logic

Aquinas saw logic as an essential tool for theology. Drawing on Aristotle, he believed reason could clarify faith and resolve apparent contradictions. His method elevated logical argumentation in theological debates.

6.2 View on Scripture

For Aquinas, Scripture was the ultimate source of divine truth. However:

He employed literal and allegorical interpretations.

He maintained that reason aids in understanding Scripture’s deeper meanings.

Theology, as sacra doctrina, involved using Scripture and natural reason to know God.

Chapter 7: Role in the Church

7.1 Theological Authority

Aquinas’ work helped the Church articulate doctrine, particularly on:

The nature of God and the Trinity.

Sacraments: Especially transubstantiation, where Aristotelian metaphysics underpins his explanation of the Eucharist.

Moral philosophy: Integrating virtue ethics into Christian ethics.

7.2 Influence on Councils

The Council of Trent (1545–1563) relied heavily on Aquinas’ Summa to counter Protestant theology.

Chapter 8: Influence on Later Thinkers, Theologians, and Scientists

8.1 Theological Legacy

Aquinas became the cornerstone of Thomism, a school of thought still influential in Catholic theology. Figures like Robert Bellarmine and John Henry Newman drew upon his works.

8.2 Impact on Philosophy

Renaissance Humanism: Aquinas’ emphasis on reason inspired later thinkers like Descartes and Leibniz.

Modern Philosophy: His synthesis influenced rationalism and empiricism.

8.3 Contributions to Science

By affirming the harmony of faith and reason, Aquinas paved the way for scientific inquiry. His reliance on observation aligns with the scientific method later formalized by thinkers like Francis Bacon and Galileo.

Chapter 9: Aquinas’ Impact on the Reformation

9.1 Critique of Aquinas by Reformers

While Aquinas’ authority was upheld in Catholicism, Reformers like Martin Luther rejected his reliance on Aristotelian logic:

Luther criticized Aquinas’ “over-intellectualized” approach to faith.

The Reformers emphasized sola scriptura over reason.

9.2 Indirect Influence

Despite criticism, Aquinas influenced the Reformers indirectly:

His moral philosophy shaped Protestant ethical frameworks.

His exploration of grace and free will informed debates on salvation.

9.3 Counter-Reformation

In response to Protestantism, the Catholic Church leaned heavily on Aquinas’ works to defend doctrine. His ideas became a bulwark of Catholic orthodoxy.

Chapter 10: Conclusion

Thomas Aquinas remains one of the most significant figures in Western intellectual history. His ability to synthesize Aristotle’s philosophy with Christian theology set a precedent for reconciling faith and reason. Aquinas’ legacy extends beyond theology into philosophy, science, and ethics, influencing thinkers across generations. While Reformers challenged his methods, his work became central to the Catholic Church’s identity during the Counter-Reformation.

The enduring relevance of Aquinas lies in his systematic approach, logical precision, and unwavering commitment to truth. By building a bridge between ancient philosophy and Christian doctrine, he shaped the intellectual framework of the medieval world and beyond.

Conclusion

Albertus Magnus and Thomas Aquinas stand as monumental figures in the history of Western thought, embodying the delicate balance between reason and faith. Albertus, through his profound study of Aristotle and dedication to the natural sciences, shattered the boundaries between philosophy, science, and theology, demonstrating that understanding the material world could illuminate the divine. His influence extended far beyond his own achievements, as his mentorship of Thomas Aquinas ensured that his legacy would endure.

Thomas Aquinas refined his teacher’s integration of Aristotle’s philosophy into Christian doctrine, constructing a systematic framework where faith and reason complemented rather than conflicted with one another. Together, their work paved the way for the Scholastic tradition, shaping intellectual discourse for centuries to come and laying the foundation for modern scientific and philosophical inquiry.

The lives and teachings of Albertus and Aquinas remind us of the transformative power of knowledge when approached with humility and reverence. By bridging the natural and spiritual realms, they created a timeless legacy—one that continues to inspire those who seek truth in all its forms, whether through science, philosophy, or faith.

References

1. Aristotle. Nicomachean Ethics. Translated by W.D. Ross. Oxford: Oxford University Press, 1980.

2. Aristotle. Metaphysics. Translated by Hugh Lawson-Tancred. London: Penguin Books, 1998.

3. Aristotle. Physics. Translated by Robin Waterfield. Oxford: Oxford University Press, 1996.

4. Plato. The Republic. Translated by Benjamin Jowett. New York: Dover Publications, 2000.

5. Albertus Magnus. De Mineralibus. Translated by Dorothy Wyckoff. Oxford: Clarendon Press, 1967.

6. Albertus Magnus. De Vegetabilibus et Plantis. Edited and translated by H.J. Stadler. Münster: Aschendorff, 1916.

7. Aquinas, Thomas. Summa Theologica. Translated by the Fathers of the English Dominican Province. New York: Benziger Brothers, 1948.

8. Aquinas, Thomas. Summa Contra Gentiles. Translated by Anton C. Pegis. Notre Dame: University of Notre Dame Press, 1975.

9. Weisheipl, James A. Albertus Magnus and the Sciences: Commemorative Essays. Toronto: Pontifical Institute of Mediaeval Studies, 1980.

10. Dod, Bernard G. “Aristotle, Maimonides, and Aquinas.” Cambridge History of Later Medieval Philosophy, edited by Norman Kretzmann et al., Cambridge: Cambridge University Press, 1982.

11. Grant, Edward. God and Reason in the Middle Ages. Cambridge: Cambridge University Press, 2001.

12. Lindberg, David C. The Beginnings of Western Science: The European Scientific Tradition in Philosophical, Religious, and Institutional Context. Chicago: University of Chicago Press, 1992.

13. Gilson, Etienne. The Christian Philosophy of St. Thomas Aquinas. New York: Random House, 1956.

14. Moran, Dermot. “The Influence of Aristotle on Medieval Philosophy.” A Companion to Philosophy in the Middle Ages, edited by Jorge J.E. Gracia and Timothy B. Noone, Malden: Blackwell, 2003.

15. McInerny, Ralph. Aquinas. Cambridge: Polity Press, 2004.

16. Sylla, Edith Dudley. “The Oxford Calculators and the Rise of Mechanics.” Science in the Middle Ages, edited by David C. Lindberg, Chicago: University of Chicago Press, 1978.

17. Gutas, Dimitri. Greek Thought, Arabic Culture: The Graeco-Arabic Translation Movement in Baghdad and Early Abbasid Society. London: Routledge, 1998.

18. Nasr, Seyyed Hossein. Science and Civilization in Islam. Cambridge, MA: Harvard University Press, 1968.

19. Burnett, Charles. “The Transmission of Greek Philosophy and Science into Islam.” The Cambridge Companion to Medieval Philosophy, edited by A.S. McGrade, Cambridge: Cambridge University Press, 2003.

20. Endress, Gerhard. “The Arabic Aristotle.” Encyclopedia of Islam, 2nd ed., Leiden: Brill, 2007.

21. Crombie, A.C. Robert Grosseteste and the Origins of Experimental Science: 1100–1700. Oxford: Clarendon Press, 1953.

22. Steele, Robert. “Albertus Magnus and Medieval Alchemy.” Proceedings of the Royal Society of Medicine, vol. 17, 1924, pp. 19–30.

23. Thorndike, Lynn. A History of Magic and Experimental Science, Vol. II. New York: Columbia University Press, 1923.

24. Resnick, Irven. “Albert the Great on Nature and the Supernatural.” The Review of Metaphysics, vol. 46, no. 3, 1993, pp. 547–574.

25. Pieper, Josef. Guide to Thomas Aquinas. San Francisco: Ignatius Press, 1991.

26. Woods, Thomas E. How the Catholic Church Built Western Civilization. Washington, DC: Regnery Publishing, 2005.

27. Meyer, Heinrich. Albertus Magnus: Sein Leben und seine Wissenschaft. Leipzig: G.J. Göschen, 1915.

28. Colish, Marcia L. Medieval Foundations of the Western Intellectual Tradition. New Haven: Yale University Press, 1997.

29. Bonner, Anthony. The Art and Logic of Ramon Llull: A User’s Guide. Leiden: Brill, 2007.

30. McKeon, Richard. Selections from Medieval Philosophers. New York: Charles Scribner’s Sons, 1929.