Abstract

The purpose of the dissertation is to defend and elaborate on internal realism, a doctrine first put forward by Hilary Putnam. Chapter 1 surveys the current philosophical conceptions of truth and reference, a necessary background for the ensuing discussion. Chapter 2 explains the metaphysical realism vs. internal realism controversy. Internal realism is construed as consisting of three theses: the ontological mind-dependence of the world, verificationism about truth , and conceptual relativism . Chapter 3 offers an internal realist account of reference. The key idea is that the references of words get fixed by justification conditions of sentences. It also discusses Putnam's controversial Twin Earth and model-theoretic arguments. These arguments might seem to pull into different directions, but they can be reconciled, and they fit well with the internal realist account. Chapter 4 presents an internal realist account of truth. Within a conceptual scheme, given the reference of words, truth can be defined by Tarkis's method. Conceptual schemes themselves are adequate if they can support a choiceworthy and successful practice. It is also shown--through an analysis of Putnam's brains-in-a-vat argument--that internal realism leaves no room for global skepticism. Chapter 5 defends the much maligned notion of conceptual scheme. It is argued that the analytic-synthetic and the observational-theoretical distinctions, which provided its basis, can be revised so that the familiar criticism are rendered harmless. The key idea is that the distinctions are relative to the perspective of an interpreter. The revised notion of conceptual scheme can also withstand Davidson's attack and other frequent objections