Abstract

_Realism and the Aim of Science_ is one of the three volumes of Karl Popper’s _Postscript_ to the Logic of scientific Discovery. The _Postscript_ is the culmination of Popper’s work in the philosophy of physics and a new famous attack on subjectivist approaches to philosophy of science. _Realism and the Aim of Science_ is the first volume of the _Postcript_. Popper here formulates and explains his non-justificationist theory of knowledge: science aims at true explanatory theories, yet it can never prove, or justify, any theory to be true, not even if is a true theory. Science must continue to question and criticise all its theories, even those that happen to be true. _Realism and the Aim of Science_ presents Popper’s mature statement on scientific knowledge and offers important insights into his thinking on problems of method within science.