A distinctive feature of Ludwig Wittgenstein's work after 1930 was his turn to a conception of philosophy as a form of social inquiry, John G. Gunnell argues, and Thomas Kuhn's approach to the philosophy of science exemplified this conception. In this book, Gunnell shows how these philosophers address foundational issues in the social and human sciences, particularly the vision of social inquiry as an interpretive endeavour and the distinctive cognitive and practical relationship between social inquiry and its subject matter.