Internet Encylopedia of Philosophy (2010)
[From the article's Introduction]: The main topic of the article is the Western metaphilosophy of the last hundred years or so. But that topic is broached via a sketch of some earlier Western metaphilosophies. (In the case of the sketch, ‘Western’ means European. In the remainder of the article, ‘Western’ means European and North American. On Eastern metaphilosophy, see the entries filed under such heads as ‘Chinese philosophy’ and ‘Indian philosophy’.) Once that sketch is in hand, the article defines the notion of metaphilosophy and distinguishes between explicit and implicit metaphilosophy. Then there is a consideration of how metaphilosophies might be categorized and an outline of the course of the remainder of the article.