The Nature of Logic

  • Ivor Grattan-Guinness
  • Gérard Bornet
Part of the Science Networks · Historical Studies book series (SNHS, volume 20)


Reasoning is for the most part carried on by the aid of signs. It has been contended by some writers that it can only be conducted by this agency; others maintain that the use of signs is not indispensable and this is the more probable opinion. But it is universally agreed that the use of signs is a most important aid and that without them no extended process or reasoning could be conducted


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Copyright information

© Springer Basel AG 1997

Authors and Affiliations

  • Ivor Grattan-Guinness
    • 1
  • Gérard Bornet
    • 2
  1. 1.Middlesex UniversityMiddlesexGreat Britain
  2. 2.Philosophisches SeminarUniversité MiséricordeFribourgSwitzerland

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