The term finality (from the Latin finalitas, derived from finis, “end,” “goal,” “purpose”) designates the orientation of a being, an action, or a process toward an end. In metaphysics, finality expresses the fact that a reality is ordered toward a fulfillment or a good that constitutes its proper completion.
More particularly
The notion of finality answers the question: “For the sake of what?” (propter quid?). Whereas the efficient cause explains what produces an effect, the final cause explains why that effect is produced and toward what it is directed.
Aristotle was the first to integrate finality systematically into his doctrine of the four causes. Alongside the material, formal, and efficient causes, he distinguishes the final cause, which he often considers the most fundamental, since it gives intelligibility to the others. A house is built from certain materials and by the work of builders, but it is built for the purpose of dwelling.
Finality does not concern only conscious human actions. For Aristotle, it is present throughout nature. Living beings grow toward their development, organs exist for particular functions, and natural realities tend toward their proper fulfillment. Nature acts according to an intelligible order directed toward ends.
Classical metaphysics deepens this perspective. Every nature possesses an inner orientation that flows from what it is. Finality is therefore not a subjective projection of the human mind onto reality; it belongs to the very structure of beings. A thing acts according to its nature because it tends toward the good that corresponds to it.
St. Thomas Aquinas sees this orientation as one of the clearest signs of the intelligibility of the world. In the fifth of his “Five Ways,” he points out that even beings devoid of knowledge act regularly toward certain ends. This orientation toward an end reveals, in his view, the existence of an ordering intelligence.
Finality is thus closely linked to the notion of the good. Every end appears as a good, at least relative to the being that pursues it. The good is that toward which all things tend (bonum est quod omnia appetunt). To understand the finality of a being is therefore to understand the good that constitutes its fulfillment.
The Platonic and Christian traditions teach that particular ends ultimately refer to a supreme end. Limited goods participate in a higher Good that constitutes the ultimate fulfillment of being. The universal finality of the cosmos thus appears as an orientation toward the Good, Truth, and Unity.
This perspective also helps to clarify the relationship between finality, creation, and symbol. If the world proceeds from a creative intelligence, its order cannot be devoid of meaning. The ends present in nature then bear witness to a wisdom manifested through the very structures of reality. As Jean Borella emphasizes, the cosmos appears not only as an order of causes but also as an order of meanings.
Finality therefore emerges as one of the keys to understanding reality. It shows that reality is not merely produced by causes but is also directed toward ends that confer upon it meaning and fulfillment.
See also: Good, Cause, First Cause, Creation, Nature, Principle, Symbol, Teleology.
Further Reading
• Aristotle, Physics, II, 3–9.
• Aristotle, Metaphysics, XII.
• Aristotle, Parts of Animals, I, 1.
• St. Thomas Aquinas, Summa Theologiae, I, q. 2, a. 3; I-II, q. 1.
• St. Thomas Aquinas, Summa Contra Gentiles, III, 2–3.
• Étienne Gilson, The Christian Philosophy of St. Thomas Aquinas.
• Jacques Maritain, The Degrees of Knowledge.
• Jean Borella, The Metaphysics of Symbol (Métaphysique du symbole).
• Wolfgang Smith, The Wisdom of Ancient Cosmology.
• Bruno Bérard, Métaphysique pour tous, Paris, L’Harmattan, 2022 (Eng. trans. Metaphysics for Everyone; It. trans. Sui sentieri della metafisica; Sp. trans. ¿Qué es la metafísica?; Ger. trans. Was ist Metaphysik? Zwischen Ambition und Wirklichkeit).
Note: Finality complements the notion of causality. Whereas cause answers the question “Where does this come from?”, finality answers the question “Toward what does this tend?” For Aristotle as for St. Thomas Aquinas, the intelligibility of reality requires understanding both its origin and its destination. Finality thus links nature to the good, creation to wisdom, and the cosmos to the meaning it manifests.