ABSTRACT Bernard Yack’s The Longing for Total Revolution is not just an important study of an extremely influential strain of post-Kantian philosophy, which according to Yack culminated in both Marx and Nietzsche. It also exemplifies an unusual approach to the history of thought: a form of critical genealogy that, unlike the Nietzschean and Foucauldian variants, seeks intellectual charity by ascribing mistaken ideas not to non-ideational psychological or social sources, but to a web of beliefs that would have obscured from fully (...) rational historical actors the mistakenness of the idea being genealogized. This approach to intellectual history can justify the history of thought on logical grounds that are unavailable to those who attempt to justify it on the basis of the inherent interest of the past or the usefulness of intellectual history in providing resources for present-day use. (shrink)