Philosophical logic refers to those areas of philosophy in which recognized methods of logic have traditionally been used to solve or advance the discussion of philosophical problems. Among these,  Sybil Wolfram highlights the study of argument, meaning, and truth, while  Colin McGinn presents identity, existence, predication, necessity and truth as the main topics of his book on the subject.
Philosophical logic also addresses extensions and alternatives to
traditional, "classical" logic known as "non-classical" logics. These receive more attention in texts such as John P. Burgess's Philosophical Logic, the  Blackwell Companion to Philosophical Logic, or the multi-volume  Handbook of Philosophical Logic edited by  Dov M. Gabbay and Franz Guenthner.
, Wiley-Blackwell: 2002. A Companion to Philosophical Logic
Philosophical Logic: An Introduction. Routledge: 1989. ISBN . 0-415-02317-3
Preface to Colin McGinn,
Logical Properties: Identity, Existence, Predication, Necessity, Truth, Oxford: Oxford University Press, 2000 ( ISBN 0-19-926263-2).
John P. Burgess,
Philosophical Logic, Princeton University Press: 2009.
Lou Goble (ed.),
, Oxford: The Blackwell Guide to Philosophical Logic Blackwell: 2009 ( ISBN 0-631-20693-0).
Gabbay, Dov M.; Guenthner, Franz (eds.),
Handbook of Philosophical Logic