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Work #13

Summa Theologiae

Thomas Aquinas
1265–1274 (left incomplete at Aquinas's death) · Medieval Latin
Disputational treatise — questions, articles, objections, replies · Western Catholicism / Scholasticism / Thomism

Faith and reason in concord — Aristotle baptised, Augustine systematised, the act of being made foundational

Attribute Fingerprint

Rows where works disagree are highlighted in gold. The full ontology grid is shown.

Attribute Summa Theologiae
Time · Extent Both
Time · Ontological Status Substantival
Time · Grain Continuous
Time · Freedom Both
Time · Traversability Linear
Time · Dimensionality One
Time · Direction Uni-directional
Space · Extent Finite
Space · Ontological Status Substantival
Space · Curvature Flat
Space · Dimensionality Three
Space · Locality Local
Matter · Extent Finite
Matter · Ontological Status Substantival
Matter · Conservation Conserved
Matter · Dimensionality Three
Matter · Locality Local
Observer · Time Instance Multiple
Observer · Space Instance Single
Observer · Knowledge Extent Immediate
Observer · Knowledge Retainment Total
Observer · Physicality Embodied
Observer · Agency Active
Observer · Number Plural
Observer · Metaphysical Agency Personal
Observer · Moral Authority Scripture
Observer · Theological Method
Energy · Extent Finite
Energy · Ontological Status Substantival
Energy · Conservation Conserved
Energy · Dispersibility Irreversible
Information · Ontological Status Substantival
Information · Cosmic Conservation Conserved
Information · Personal Conservation Conserved
Information · Granularity Continuous

Dimension-by-Dimension Evidence

What each work's passages reveal about its stance on each of the six dimensions.

Time

Summa Theologiae

Aquinas distinguishes God's eternity (the simultaneous, complete possession of unending life, q.10, a.1, citing Boethius) from aeviternity (the changeless duration of angels) and time (the measure of change in corporeal substances). Time begins with creation; God knows future contingents eternally without thereby making them necessary (q.14, a.13 — one of the most subtle medieval discussions of foreknowledge and freedom).

Space

Summa Theologiae

The Aristotelian-Ptolemaic cosmos is presupposed: a finite, spherical, hierarchical universe. Place (locus) is the inner surface of the containing body, exactly as in Aristotle. God's omnipresence is treated carefully: God is in all places by essence, presence, and power (q.8) without himself being a spatial substance.

Matter

Summa Theologiae

Hylomorphic matter receives substantial form; prime matter (materia prima) is pure potentiality, taking on actuality only when informed. Matter is created by God ex nihilo, conserved by his continuing causality, and locally interactive. The whole Aristotelian apparatus of substantial and accidental change is taken over and integrated.

Observer

Summa Theologiae

The Thomist observer is the rational animal — a body-soul composite whose intellect can abstract universals from sense experience (q.84–88) and whose will pursues the good. Knowledge is immediate in origin (it begins from the senses, against innatism) but completed by the beatific vision in patria. Agency is active under God's primary causality (the doctrine of secondary causation, q.105). Observer Number is plural — human beings are genuinely individuated substances.

Energy

Summa Theologiae

Esse — the act of being — is the energetic core of the Thomist metaphysics. Every creature has its essence and exists by participating in being; the act-of-being is the deepest metaphysical actuality, given continuously by God. Energy in the physical sense is conserved within creation and locally dissipative in the manner of medieval physics.

Information

Summa Theologiae

God's knowledge of creatures is their archetype (q.14–15); creaturely intellects participate in divine knowledge. Personal information is conserved: the soul is incorruptible (q.75, a.6), survives the body, and at the resurrection is reunited with a glorified body. The whole creation participates in the divine ideas — substantival informational realism at the cosmic scale.

Internal Tensions

Where each work's argument pulls against itself.

Summa Theologiae

The Summa's integration of faith and reason has been disputed in two directions ever since: the Augustinian-Reformed wing thinks it gives too much to philosophical reason, the modern philosophical wing thinks it gives too much to revealed theology. The treatment of grace and free will (q.83 and Prima Secundae q.109–14) is the point at which all the later Catholic controversies — Molina, Bañez, Jansenism — divide. Aquinas's text supports more than one reading.