Objects and Identity

An Examination of the Relative Identity Thesis and Its Consequences

  • Authors
  • Harold¬†W.¬†Noonan

Part of the Melbourne International Philosophy Series book series (MIPS, volume 6)

Table of contents

  1. Front Matter
    Pages I-XIV
  2. Harold W. Noonan
    Pages 1-15
  3. Harold W. Noonan
    Pages 16-21
  4. Harold W. Noonan
    Pages 22-24
  5. Harold W. Noonan
    Pages 25-25
  6. Harold W. Noonan
    Pages 26-35
  7. Harold W. Noonan
    Pages 36-51
  8. Harold W. Noonan
    Pages 52-61
  9. Harold W. Noonan
    Pages 62-76
  10. Harold W. Noonan
    Pages 82-106
  11. Harold W. Noonan
    Pages 107-114
  12. Harold W. Noonan
    Pages 115-128
  13. Harold W. Noonan
    Pages 129-153
  14. Harold W. Noonan
    Pages 154-163
  15. Harold W. Noonan
    Pages 164-171
  16. Back Matter
    Pages 172-176

About this book


Identity has for long been an important concept in philosophy and logic. Plato in his Sophist puts same among those fonns which "run through" all others. The scholastics inherited the idea (and the tenninology), classifying same as one of the "transcendentals", i.e. as running through all the categories. The work of Locke and l.eibniz made the concept a problematic one. But it is rather recently, i.e. since the importance of Frege has been generally recognized, that there has been a keen interest in the notion, fonnulated by him, of a criterion of identity. This, at first sight harmless as well as useful, has proved to be like a charge of dynamite. The seed had indeed been sown long ago, by Euclid. In Book V of his Elements he first gives a useless defmition of a ratio: "A ratio is a sort of relation between two magnitudes in respect of muchness". But then, in definition 5 he answers, not the question "What is a ratio?" but rather ''What is it for magnitudes to be in the same ratio?" and this is the definition that does the work.


John Locke Plato idea logic philosophy

Bibliographic information

  • DOI
  • Copyright Information Springer Science+Business Media B.V. 1980
  • Publisher Name Springer, Dordrecht
  • eBook Packages Springer Book Archive
  • Print ISBN 978-90-481-8259-6
  • Online ISBN 978-94-017-2466-1
  • Buy this book on publisher's site