Abstract
This book discusses questions concerning mind and matter, substance and accident, and knowledge and experience in the work of a wide range of nineteenth and early twentieth century philosophers, giving a problem-oriented account of Austrian philosophy and its role in the conception of analytic philosophy and logical empiricism. At the centre of the book is the debate about the relation between empirical science and metaphysics, and the question of whether empirical psychology depends on the metaphysics of the soul - the mental substance. Friedrich Albert Lange’s famous dictum to create a “psychology without a soul” pointed the way.