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The Priority of Locomotion in Aristotle’s Physics
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4.4.4 Every change in the four basic qualities involves condensation or rarefaction So far it has become clear that Aristotle in saying that πύκνωισς and μάνωσις are principles of all qualities and hence of all alteration, is claim- ing that any such changes involve some change in density that occurs with respect to the thing that alters. I have already presented the first part of the reason for this claim, namely that any change in quality necessarily involves a concomitant change with respect to the four basic qualities of the change’s subject. Now I will argue that this change of the four basic qualities necessa- rily involves condensation and rarefaction, and in consequence, it will become clear that every alteration, in virtue of occurring by means of a change in the four elemental qualities, always goes hand in hand with con- densation or rarefaction. That a change from hot to cold, or vice versa, goes hand in hand with condensation and rarefaction is clear from examples stated at an earlier point in the discussion. As each of the elemental bodies becomes hotter or colder, a change in volume also occurs. As we have seen, as water is heated it expands and becomes more rarefied, but contracts when cooled. The same is true of the other elements. This already suffices, since these phe- nomena according to Aristotle can be explained by making use of the con- cepts of condensation and rarefaction. But, as we have seen, for the argument to work, condensation and rare- faction also have to be “sources” of dry and moist, as well as of the change from one of the two contraries to the other. Although Aristotle does not explain in what sense this is the case, I think it follows from his theory inso- far as it can be inferred from the role the basic qualities of dry and moist play for the simple bodies. To which of the four elements an elemental body belongs, i.e. which form it has, depends on the way in which the four basic kinds of qualities are combined. Fire is characterised by the qualities of hot and dry, air by hot and moist, water by cold and moist, and earth by cold and moist.101 If an element is affected in such a way that one of its defining qualities turns into its contrary, then the elemental body as this particular elemental body perishes, and a new one that belongs to the kind of simple bodies characterised by the new combination of the basic qualities comes to be. If, for example, water, which is essentially characterized by a combina- tion of cold and moist, is affected in such a way that its being moist is over- come (κρατεῖν) by dryness, as Aristotle puts it, then the water perishes in the process, and earth, which is cold and dry, comes to be instead.102 Con- 101 See GC II 3, 330b1–9. 102 See GC II 4, 331a32–36. 108 Locomotion necessarily accompanies each of the other kinds of change ISBN Print: 9783525253069 — ISBN E-Book: 9783647253060 © 2014, Vandenhoeck & Ruprecht GmbH & Co. KG, Göttingen
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The Priority of Locomotion in Aristotle’s Physics
Title
The Priority of Locomotion in Aristotle’s Physics
Author
Sebastian Odzuck
Editor
Dorothea Frede
Gisela Striker
Publisher
Vandenhoeck & Ruprecht GmbH & Co
Date
2014
Language
English
License
CC BY-NC-ND 4.0
ISBN
9783647253060
Size
15.5 x 23.2 cm
Pages
238
Categories
Geisteswissenschaften
Naturwissenschaften Physik

Table of contents

  1. Acknowledgements 9
  2. 1. Introduction 10
  3. 2. The importance of the primary kind of change 14
    1. 2.1 Overview 14
    2. 2.2 The arrangement of the Physics 15
      1. 2.2.1 First option: Books VI–VIII as the treatise On Change 18
        1. 2.2.1.1 Andronicus 19
        2. 2.2.1.2 Theophrastus’ letter 19
        3. 2.2.1.3 References in Aristotle 21
        4. 2.2.1.4 Eudemus 21
      2. 2.2.2 Second option: Books V–VIII as the treatise On Change 22
    3. 2.3 The eight books of the Physics 25
      1. 2.3.1 Physics I–IV: Examining change for the sake of understanding nature 25
      2. 2.3.2 Physics V–VIII: The general analysis of change 27
    4. 2.4 Physics VIII 31
      1. 2.4.1 Overview 31
      2. 2.4.2 The argument of Physics VIII 31
      3. 2.4.3 The importance of the primary kind of change 34
    5. 2.5 Conclusion 40
  4. 3. Change in quality and quantity of living beings depends on loco-motion, but not vice versa 42
    1. 3.1 Overview 42
    2. 3.2 Growth and diminution presuppose alteration 44
      1. 3.2.1 Growth presupposes alteration 45
      2. 3.2.2 Diminution presupposes alteration 48
    3. 3.3 Alteration presupposes locomotion 49
    4. 3.4 Does locomotion precede all occurrences of change in quantity? 53
    5. 3.5 The reason for the restriction of the argument’s scope 58
    6. 3.6 The sense of priority 67
    7. 3.7 Conclusion 69
  5. 4. Locomotion necessarily accompanies each of the other kinds of change, but not vice versa 71
    1. 4.1 Overview 71
    2. 4.2 What changes in quantity changes with respect to place 73
      1. 4.2.1 Overview 73
      2. 4.2.2 What is growing moves to a larger place 74
      3. 4.2.3 Change in place implies no change in the spatial order of the subject’s parts 78
      4. 4.2.4 A possible objection 81
      5. 4.2.5 Compatibility with the irreducibility of the kinds of change 85
      6. 4.2.6 Conclusion 88
    3. 4.3 What undergoes generation or corruption changes with respect to place 89
      1. 4.3.1 Overview 89
      2. 4.3.2 Generation and corruption in virtue of aggregation and segregation 90
      3. 4.3.3 What aggregates or segregates must change with respect to place 96
      4. 4.3.4 Conclusion 97
    4. 4.4 What changes in quality changes with respect to place 98
      1. 4.4.1 Overview 98
      2. 4.4.2 What does it mean that condensation and rarefaction are principles of quality? 100
      3. 4.4.3 Every alteration involves a change in the four basic qualities 104
      4. 4.4.4 Every change in the four basic qualities involves con- densation or rarefaction 108
      5. 4.4.5 Condensation and rarefaction are forms of aggregation and segregation 110
      6. 4.4.6 What changes in quality changes with respect to place 112
      7. 4.4.7 Conclusion 113
    5. 4.5 Conclusion 113
  6. 5. All changes depend on the first locomotion, but not vice versa 115
    1. 5.1 Overview 115
    2. 5.2 The unity of the eternal change 118
      1. 5.2.1 Two ways in which change may be eternal 118
      2. 5.2.2 Why the eternal change must be one and continuous 121
      3. 5.2.3 The criteria for being one continuous change 123
      4. 5.2.4 What is better is the case in nature 127
    3. 5.3 Locomotion alone can be one and eternal 130
      1. 5.3.1 None of the other three kinds of change can be one and eternal 131
      2. 5.3.2 Only circular locomotion can be one and eternal 134
    4. 5.4 Locomotion has ontological priority 137
      1. 5.4.1 Ontological priority 137
      2. 5.4.2 A third sense in which locomotion is ontologically prior 139
    5. 5.5 Conclusion 142
  7. 6. Locomotion has temporal priority 144
    1. 6.1 Overview 144
    2. 6.2 Locomotion has priority in time, since it is the only change eternals can undergo 146
    3. 6.3 Objection: Locomotion is the last of all changes in perishable things 148
    4. 6.4 Coming to be presupposes an earlier locomotion 150
    5. 6.5 The locomotion of the sun as a cause of generation 154
    6. 6.6 Conclusion 162
  8. 7. Locomotion is prior in essence 164
    1. 7.1 Locomotion is prior in essence, since it is last in coming to be 164
      1. 7.1.1 Overview 164
      2. 7.1.2 The reversed priority claim 166
      3. 7.1.3 A different use of the term ‘locomotion’ 172
      4. 7.1.4 Does locomotion come to things last? 175
        1. 7.1.4.1 Capacities of the soul 176
        2. 7.1.4.2 Priority in essence of the locomotive capacity 179
      5. 7.1.5 Another sense of priority in essence 182
      6. 7.1.6 Conclusion 184
    2. 7.2 Locomotion alone preserves its subject’s essence 186
      1. 7.2.1 Overview 186
      2. 7.2.2 Locomotion does not change its subject’s being 188
      3. 7.2.3 Locomotion preserves its subject’s essence best 190
      4. 7.2.4 Making x depart from its essence by being part of a change in essence? 195
        1. 7.2.4.1 Alteration as part of a change in essence 195
        2. 7.2.4.2 Growth and diminution as part of change in essence 199
        3. 7.2.4.3 Locomotion as a part of a change in essence? 201
      5. 7.2.5 Change in quality or quantity in principle may result in a change in essence 202
    3. 7.3 Conclusion: Locomotion’s priority in essence 207
  9. 8. Conclusion 211
  10. Bibliography 220
  11. List of Abbreviations 223
  12. Index Locorum 221
  13. Index Nominum 223
  14. Index Rerum 221
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