Appendix B: Truths

  • Mario Bunge
Part of the Boston Studies in the Philosophy of Science book series (BSPS, volume 287)


There are at least two quite different concepts of truth: formal and factual. Leibniz called them vérités de raison and vérités de fait respectively. Whereas the formal truths are those of logic and mathematics, the factual truths are characteristic of ordinary knowledge, science, and technology. For example, while “There are infinitely many prime numbers” is a formal truth, “There are about six billion people at this time” is a factual truth. The confusion between the two kinds of truth is even worse than the confusion between value and price.


Formal Truth Truth Criterion Correspondence Theory Factual Truth Partial Truth 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  1. 1.Dept. of PhilosophyMcGill UniversityMontrealCanada

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