Abstract
In the course of the development of epistemic logic during the sixties and seventies practically no principle that had been proposed as an axiom for the logic of knowledge was spared from critical objections1. Perhaps the only unobjectionable principle consists in the common sense truism that false statements cannot be known to be true, or:
P1 If some person a knows that p, then p must in fact be true.
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Lenzen, W. (2001). Free Epistemic Logic. In: Morscher, E., Hieke, A. (eds) New Essays in Free Logic. Applied Logic Series, vol 23. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9761-6_6
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DOI: https://doi.org/10.1007/978-94-015-9761-6_6
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