Prolegomena zu einer jeden künftigen Metaphysik die als Wissenschaft wird auftreten können.

'The finest and most comprehensible of Kant's principal works, which is far too little read, for it immensely facilitates the study of his philosophy' (Schopenhauer). Published two years after his seminal Kritik der reinen Vernunft, Kant's polemic Prolegomena advance and defend his earlier conclusions, often by means of new arguments. 'The best of all introductions to ... the Critique of Pure Reason [with] exemplary lucidity and wit' (Beck), the Prolegomena 'inaugurates [sic] a new form of truly philosophical popularity, unrivaled for clarity and keenness' (Cassirer).

Early annotations on the endpapers record influential philosophical publications from 1747 to 1803, including the Prolegomena and three Critiques, discussing Kant's sources and his influence on subsequent thinkers.