Abstract
In his recent book Rationality, Nicholas Rescher offers a provocative attempt to justify rationality. In this paper I critically assess that attempt. After clarifying the philosophical problem at issue, I examine Rescher's effort to solve it. I argue that Rescher's justification succeeds, but that he mistakenly characterizes it as pragmatic. It succeeds only if it is understood non-pragmatically. Consequently, Rescher must give up either his justificatory argument, or his commitment to a pragmatic justification.