'This is a timely book, with penetrating discussion of issues very much in the forefront of the contemporary philosophy. Despite the prominence of negative arguments it contains much to contribute positively to our understanding of what is needed for a conception of rationality and objectivity that covers ethics and value theory generally as well as physics.'

Hilary Putnam deals in this book with some of the most fundamental persistent problems in philosophy: the nature of truth, knowledge and rationality. His aim is to break down the fixed categories of thought which have always appeared to define and constrain the permissible solutions to these problems.

Physics.

Danielle Macbeth offers a new account of mathematical practice as a mode of inquiry into objective truth, and argues that understanding the nature of mathematical practice provides us with the resources to develop a radically new conception of ourselves and our capacity for knowledge of objective truth.

Frege (1991) -- The concept of truth in Frege's program (1984) -- Frege on truth (1986) -- Postscript to "Frege on truth" (2004) -- Frege and the hierarchy (1979) -- Postscript to "Frege and the hierarchy" (2004) -- Sinning against Frege (1979) -- Postscript to "Sinning against Frege" (2003) -- Frege on sense and linguistic meaning (1990) -- Frege on extensions of concepts, from 1884 to 1903 (1984) -- Frege on knowing the third realm (1992) -- Frege on knowing the foundation (1998) -- Frege on apriority (2000) -- Postscript to "Frege on apriority" (2003).