Scholasticism

Time, for scholasticism, is the measure of motion according to before and after — the Aristotelian definition that Aquinas adopted and integrated with the Christian doctrine of creation and eschaton. Created time has a beginning (creation ex nihilo) and an end (the eschaton), and within it providence orders human and natural history toward its proper goal. Eternity, by contrast, is not endless duration but the simultaneous and complete possession of life proper to God, following Boethius's classical definition in the Consolation. The relation between time and eternity is treated with great care, especially in the discussions of divine foreknowledge and human freedom that occupied Aquinas, Scotus, and the later Molinists and Bañezians. Liturgical time — the calendar of feasts and fasts, the daily office — is the lived shape in which this metaphysics of time is practised.

Space, for scholasticism, is the cosmic ordering of created substances — the medieval cosmos of nested spheres, sublunar and supralunar regions, and natural places to which the elements tend. Aquinas inherited from Aristotle the doctrine that bodies have natural places they seek by their nature, and that the cosmos as a whole is finite and ordered toward its centre. Space is therefore real, structured, and teleologically ordered rather than the homogeneous Newtonian void of later physics. The local space of the university, the cathedral, the monastery, and the parish church mirrors this larger cosmic order, since each institution has its proper place and proper end. Late scholasticism, especially in Suárez and the Salamanca school, refined these positions in dialogue with the new astronomy, but the conviction that space is the home of substances ordered to their ends remained characteristic.

Matter, for scholasticism, is the substrate of substantial change in the Aristotelian sense: prime matter, which has no actuality of its own, takes on substantial form to constitute the individual substances of the created world. Aquinas's hylomorphism, inherited and refined from Aristotle, holds that every corporeal substance is a real composite of form and matter, and that the individuation of substances within a species is owed to designated matter. This account permitted the scholastic theologians to articulate doctrines that required precise metaphysical machinery — the eucharistic transubstantiation, the resurrection of the body, the soul as the form of the body — with a rigor difficult to match in alternative frameworks. Matter is therefore substantival and real, but never bare: it always exists informed, and its capacities are referred to the natural ends of the substances it composes. The medieval world is teeming with substances, each with its own nature.

Persons are creaturely image-bearers whose reason, properly disciplined within the university tradition and the church, can approach knowledge of created and revealed truth.

Energy, for scholasticism, is intelligible through the Aristotelian distinction between potency and act: a being moves from what it is capable of becoming to what it actually is through the operation of causes proper to its nature. Aquinas's analysis of motion and change in the Summa, and the later commentators' refinements in the Salamanca school and in Suárez, made this metaphysics of act and potency the standard scholastic account of the dynamic features of the created order. The energies of the human soul — intellect, will, the passions — are likewise ordered by their natural ends and are perfected by grace where nature alone cannot reach. The conservation of being as such is referred ultimately to God, who upholds creatures in existence from moment to moment; secondary causes operate truly but within this divine sustaining act. The medieval concept of virtus — power, capacity, the actualisable strength of a thing — does much of the work that a modern energy concept does, though within a teleological framework the modern concept lacks.

Information, for scholasticism, is the patient deposit of authoritative texts — Scripture, the Fathers, the conciliar definitions, Aristotle — engaged through the disciplined methods of the quaestio disputata and the sentence-commentary. The medieval university existed precisely to transmit and refine this body of textual information across generations, and the production of summae such as Aquinas's was the highest expression of its synthetic ambitions. Knowledge is conserved through the careful citation of authorities, the dialectical posing of objections and replies, and the cultivation of a technical vocabulary capable of fine distinctions. Information of revealed truth is given through Scripture and the magisterium and is not subject to revision in the same way as natural-philosophical claims, though both are approached through the same disciplined methods. The library, the disputation, and the lectio are the institutional shapes through which information lives.