'Chatter' cannot always be taken lightly, for its insignificance and insubstantiality challenge the very notions of substance and significance through which rational discourses seek justification. This book shows that in 'chatter' Kierkegaard uncovered a specifically linguistic mode of negativity. The author examinesin detail those writings of Kierkegaard in which he undertook complex negotiations with the threat - and also the promise - of 'chatter', which cuts across the distinctions in which the relation of language to reality - and above all, the reality of 'existence' - is stabilized, and it therefore releases historical understanding from its established conventions. Chatter situates as well as takes the measure of the seminal importance of Kierkegaard for many of today's unresolved debates about the relation of language and philosophy to history.