This book repairs and revives theTheory of Knowledgeresearch program of Russell’sPrincipiaera. Chapter 1, 'Introduction and Overview', explains the program’s agenda. Inspired by the non-Fregean logicism ofPrincipia Mathematica, it endorses the revolution within mathematics presenting it as a study of relations. The synthetic apriorilogic ofPrincipiais the essence of philosophy considered as a science which exposes the dogmatisms about abstract particulars and metaphysical necessities that create prisons that fetter the mind. Incipient inTheProblems of Philosophy, the program’s...