CHAPTER XXI: QUESTION 47 THE DISTINCTION OF THINGS IN GENERAL

[891] Summa Theol., Ia, q. 54, a. 1, 2, 3

[892] Aristotle, Metaphysica Bk. II, chap. 1

[893] cf. St. Thomas, In I Metaph., lect. 9

[894] cf. De potentia, q. 3, a. 16

[895] Gen. 1:1-7.

[896] Col. 1:6

[897] Wisd. 11:21

[898] De potentia, q. 3, a. 16

[899] Summa Theol., Ia, q. 19, a. 4

[900] De potentia, loc. cit

[901] Summa Theol., Ia, q. 25, a. 5

[902] ibid., q. 19, a. 3, 4

[903] Ibid., q. 15, a. 2

[904] De potentia, loc. cit

[905] Eccles 33:7 f.

[906] Dan. 3:57

[907] cf. Phedr., Time., De republica, X

[908] Gen. 1:31

[909] De civitate Dei, Bk. II, chap. 23

[910] Summa Theol., Ia, q. 25, a. 3

[911] ibid., q. 60, a. 5 ad 3

[912] Aristotle, Metaphysica, Bk. VIII, chap. 3

[913] Summa Theol., Ia, q. 21, a. 1

[914] Contra Gentes, Bk. II, chaps. 28 f.

[915] This third article is found in the codex of Monte Cassino as published in the Leonine edition

[916] Contra Gentes, Bk. II, chap. 45; Bk. III, chap. 97

[917] Rom. 13:1.

[918] Summa Theol., Ia, q. 105, a. 5.

[919] ibid

[920] cf. reply to the first difficulty

[921] Summa Theol., Ia IIae, q. 109, a. 6.

[922] cf. p, Janet, Les causes finales, p. 497

[923] John 1:10

[924] Aristotle, Metaphysica, Bk. XII, chap. 10

[925] Aristotle, De caelo et mundo. St. Thomas says: "An explanation or reason for a thing may be given in two ways. In the first place an explanation may be given to prove adequately some theory, as when in the natural sciences an adequate reason is given to prove that the movement of the heavens is always of uniform velocity. In the second place an explanation may be given which does not adequately prove the theory but which shows that certain effects are congruous to the established theory as when in astronomy the theory of eccentrics and epicycles is established because according to this theory certain phenomena of the heavenly movements can be explained. This theory is not adequate proof because it may be that these phenomena can be explained by some other theory" (Summa Theol., Ia, q. 32, a. 1. ad 2).