Aquinas

Outline 1: The Necessity of Sacred Doctrine

Thesis: Human reason alone is insufficient for attaining divine truth; therefore, divine revelation is necessary.

  1. Human Reason’s Limitations

    • Some truths about God exceed human comprehension (Isaiah 66:4).

    • Even truths accessible to reason take time and are prone to error.

  2. The Role of Divine Revelation

    • Salvation requires knowing God’s will.

    • Revelation ensures clarity, certainty, and accessibility for all people.

  3. Sacred Doctrine vs. Philosophy

    • Philosophy discovers truth through reason, but sacred doctrine comes from God’s authority.

    • Both can study the same subject (e.g., God), but sacred doctrine differs in method and purpose.

Outline 2: The Five Ways to Prove God's Existence

Thesis: God’s existence can be demonstrated through reason, using evidence from the natural world.

  1. Motion (First Mover)

    • Everything in motion is moved by something else.

    • An infinite regress is impossible → There must be an Unmoved Mover (God).

  2. Causation (First Cause)

    • Every effect has a cause.

    • An infinite regress of causes is impossible → There must be a First Cause (God).

  3. Contingency (Necessary Being)

    • Things exist but could cease to exist.

    • If everything were contingent, nothing would exist → There must be a Necessary Being.

  4. Gradation (Ultimate Good)

    • Things have degrees of perfection (e.g., good, better, best).

    • There must be a source of all perfection → God is the highest being.

  5. Governance (Intelligent Designer)

    • Non-intelligent beings act toward ends (e.g., natural laws).

    • This implies purposeful guidance → There must be an Intelligent Designer (God).

Outline 3: The Relationship Between Faith & Reason

Thesis: Faith and reason are complementary; reason supports faith but cannot replace divine revelation.

  1. Faith is Beyond, But Not Against, Reason

    • Some truths (e.g., God’s existence) can be known by reason.

    • Others (e.g., the Trinity) require revelation but are not contradictory to reason.

  2. Reason’s Role in Strengthening Faith

    • Philosophy helps clarify and defend revealed truths.

    • Logical proofs (e.g., the Five Ways) prepare the mind for belief.

  3. Faith as the Fulfillment of Reason

    • Natural knowledge leads to a desire for higher truth.

    • Since God is Truth itself, reason naturally points toward faith in Him.

TREATISE ON SACRED DOCTRINE

Flashcard 1: The Necessity of Sacred Doctrine

Front: Why is sacred doctrine necessary in addition to philosophy?
Back:

  • Human reason alone cannot grasp divine truths, so God reveals them for salvation.

  • Even truths reason could discover would only be known by a few, with errors and delays.

  • Therefore, divine revelation is necessary for a sure and accessible path to salvation.

Flashcard 2: Sacred Doctrine as a Science

Front: How does Aquinas argue that sacred doctrine is a science?
Back:

  • Some sciences derive from self-evident principles (e.g., arithmetic).

  • Others derive from a higher science (e.g., music from mathematics).

  • Sacred doctrine proceeds from divine revelation, making it a science based on God’s wisdom.

Flashcard 3: The Superiority of Sacred Doctrine

Front: Why is sacred doctrine nobler than other sciences?
Back:

  • It has greater certitude than human sciences because it comes from divine knowledge.

  • It studies higher subject matter—things beyond human reason.

  • It is both speculative (seeking truth) and practical (guiding salvation).

Flashcard 4: Multiple Senses in Scripture

Front: How can one passage in Scripture have multiple meanings?
Back:

  • Literal sense – The direct meaning of the words.

  • Spiritual sense – Words signify deeper truths:

    • Allegorical: Old Testament foreshadowing New Testament.

    • Moral: Christ’s actions guiding human behavior.

    • Anagogical: Relating to eternal life.

  • Since God is the author, multiple meanings do not cause confusion but enrich understanding.

TREATISE ON THE EXISTENCE OF GOD

Flashcard 5: Is God’s Existence Self-Evident?

Front: Why isn’t God's existence self-evident to humans?
Back:

  • Something is self-evident if its essence is clearly known.

  • God’s essence is beyond human comprehension, so His existence must be demonstrated through His effects.

Flashcard 6: Can God’s Existence Be Demonstrated?

Front: How does Aquinas argue that God’s existence can be demonstrated?
Back:

  • A priori proof (from cause to effect) is not possible since we don’t grasp God’s essence.

  • A posteriori proof (from effects to cause) is possible because creation implies a Creator.

Flashcard 7: The Five Ways to Prove God’s Existence

Front: What are Aquinas’ five proofs for the existence of God?
Back:

  1. Motion – Things move; must be a First Mover.

  2. Causation – Every effect has a cause; must be a First Cause.

  3. Contingency – Some things exist but could not exist; there must be a Necessary Being.

  4. Gradation – We compare things to degrees of perfection; there must be an Ultimate Good.

  5. Governance – Non-intelligent beings act toward ends; must be directed by an Intelligent Designer.

Flashcard 8: Answering the Problem of Evil

Front: If God is good, why does evil exist?
Back:

  • God permits evil to bring about greater good.

  • Example: Free will allows for both virtue and sin, but without it, moral goodness would not be possible.

GOD’S NATURE & ATTRIBUTES

Flashcard 9: God’s Simplicity

Front: Why does Aquinas argue that God is simple?
Back:

  • Composition implies dependence, but God is fully self-sufficient.

  • God is not made of parts (e.g., matter/form) but is pure being itself (I am who am – Ex. 3:14).

Flashcard 10: God’s Perfection

Front: Why is God considered the most perfect being?
Back:

  • Lack of perfection implies potentiality and change, but God is pure actuality.

  • Since He is the cause of all being, He possesses all perfections infinitely.

Flashcard 11: God’s Omnipotence

Front: What does it mean that God is all-powerful?
Back:

  • God can do all things possible but cannot do what is intrinsically contradictory (e.g., make a square circle).

  • His power is unlimited but always acts in accordance with His nature.

Flashcard 12: God’s Omniscience

Front: How does God know all things?
Back:

  • He knows all things at once, not in sequence like humans.

  • He knows all possibilities and actualities, including free will choices.

THE RELATIONSHIP BETWEEN FAITH & REASON

Flashcard 13: The Role of Reason in Faith

Front: Why is reason important in understanding faith?
Back:

  • Faith and reason do not contradict; they complement each other.

  • Reason prepares the mind for faith and helps us understand divine truths more deeply.

Flashcard 14: The Limits of Human Reason

Front: Why can’t human reason fully grasp God?
Back:

  • Human intellect is finite, while God is infinite.

  • Some truths about God must be revealed because they surpass our natural reasoning ability.

HUMAN NATURE & OUR RELATIONSHIP WITH GOD

Flashcard 15: The Human Soul

Front: How does Aquinas describe the soul?
Back:

  • The soul is immaterial and immortal.

  • It is the form of the body and gives humans the ability to reason and choose freely.

Flashcard 16: The Ultimate Purpose of Man

Front: What is the ultimate goal of human life?
Back:

  • Union with God is the highest end.

  • Since God is infinite goodness, the soul can only be satisfied by knowing and loving God eternally.

Flashcard 17: The Role of Virtue

Front: How does virtue help man achieve happiness?
Back:

  • Virtue perfects human nature and aligns us with God’s will.

  • Theological virtues (Faith, Hope, and Charity) direct us toward God.

Flashcard 18: Free Will & Divine Providence

Front: How can humans have free will if God is all-powerful?
Back:

  • God’s providence orders all things but does not force human choices.

  • Free will exists within God’s plan, allowing for both moral responsibility and divine guidance.