Henry Johnstone's philosophical development was guided by a persistent need to reform the concept of validity -either by reinterpreting it or by finding a substitute for it. This project lead Johnstone into interesting confrontations with the concept of rhetoric and especiaUy with the work of Chaim Perelman and Olbrechts-Tyteca. The project culminated in a failed attempt to develop a formal ethics of rhetoric and argumentation, but this attempt was itself not consistent with some of Johnstone's other characterizations ofan ethics of (...) argument ation. A virtue ethics would be truer to the Johnstonian philosophical project than a formal ethics of argument. Resume. (shrink)

From the Editor’s Introduction: "The Internal Limitations of Human Understanding." We carry, unavoidably, the limits of our understanding with us. We are perpetually confined within the horizons of our conceptual structure. When this structure grows or expands, the breadth of our comprehensions enlarges, but we are forever barred from the wished-for glimpse beyond its boundaries, no matter how hard we try, no matter how much credence we invest in the substance of our learning and mist of speculation. -/- The limitations (...) in view here are not due to the mere finitude of our understanding of ourselves and of the world in which we live. They are limitations that come automatically and necessarily with any form of understanding. They are, as we shall see, part and parcel of any organization or ordering of data that we call information. -/- The consequences of these limitations are varied: As a result of them, hermeneutics cannot help but be hermetic; scientific theories of necessity are circumscribed by the boundaries of the ideas that define them; formal systems must choose between consistency and comprehensiveness; philosophical study, because it includes itself within its own proper subject matter, is forced to be reflexive in its self-enclosure. The fundamental dynamic shared by all forms of understanding testifies to an internal limitative keystone. (shrink)