Logical Validity

Some articles on logical validity, logical:

Imperative Logic - Jørgensen's Dilemma
... One of a logic's principal concerns is logical validity ... of belief, none of the standard accounts of logical validity apply to arguments containing imperatives ... one horn, if such arguments can be valid, we need a new or expanded account of logical validity and the concomitant details ...
Tee (symbol) - See Also
... Antinomy A priori Deduction Definition Description Induction Inference Logical form Logical consequence Logical truth Name Necessity Meaning Paradox Possible world Presupposition ...

Famous quotes containing the words validity and/or logical:

    Once one is caught up into the material world not one person in ten thousand finds the time to form literary taste, to examine the validity of philosophic concepts for himself, or to form what, for lack of a better phrase, I might call the wise and tragic sense of life.
    F. Scott Fitzgerald (1896–1940)

    The truth is, that common-sense, or thought as it first emerges above the level of the narrowly practical, is deeply imbued with that bad logical quality to which the epithet metaphysical is commonly applied; and nothing can clear it up but a severe course of logic.
    Charles Sanders Peirce (1839–1914)