This book remedies the absence in the history of analytic philosophy of a detailed examination of G. E. Moore’s philosophical views as they developed between 1894 and 1902. This period saw the inauguration of analytic philosophy through the work of Moore and Bertrand Russell. Moore’s early views are examined in detail through unpublished archival material, including surviving letters, diaries, notes of lectures attended, papers for Cambridge societies, and drafts of early work, in order to revise the established view that the origin of analytic philosophy at Cambridge was an abrupt split from F. H. Bradley’s Absolute Idealism. Traditional accounts of this period have highlighted the anti-psychologism of Frege’s logic but have not explored the impact of this movement more broadly. Anti-psychologism was a key feature of the work of Moore’s teachers on the nature of the mind and its objects, in their interpretation of Kant, and in ethics. Moore’s teachers G.F. Stout and James Ward were significant contributors to the late 19th century debates in mental science and the developing new science of psychology. Henry Sidgwick’s criticisms of Kant and Bradley and his leading work in ethics were key influences on Moore. Moore’s Trinity Fellowship Dissertations are essential historical evidence of the development of Moore's new theory of judgment, a theory whose defining role in the origins of analytic philosophy cannot be overstated. Moore’s study of Kant in his dissertations ultimately formed the groundwork for his Principia Ethica (1903), which evolved from ideas that manifested in Moore’s earliest Apostles’ papers, developed through his dissertations, and were refined through his Elements of Ethics lectures (1898-99). This monumental work of early twentieth century ethics is thus shown to be the culmination of Moore’s early philosophical development.

Sam Harris dismantles the most common justification for religious faith--that a moral system cannot be based on science.

The Harmony of the Soul creates a naturalistic grounding for ethics and a moral grounding for psychotherapy. It is an original and startling synthesis of the ideas of mental health and moral virtue based on neglected affinities between classical Greek ethics, contemporary virtue ethics, sociobiology, and the basic presuppositions of psychotherapy. A central thesis of the book is that we can assume "the worst" about what science tells us about the human animal without having to sacrifice any of the things that are of most importance to ethics: virtue and the good life, harmony of the soul, freedom, conscience, and moral knowledge.

The burgeoning science of ethics has produced a trend toward pessimism. Ordinary moral thought and action, we're told, are profoundly influenced by arbitrary factors and ultimately driven by unreasoned feelings. This book counters the current orthodoxy on its own terms by carefully engaging with the empirical literature. The resulting view, optimistic rationalism, shows the pervasive role played by reason our moral minds, and ultimately defuses sweeping debunking arguments in ethics. The science does suggest that moral knowledge and virtue don't come easily. However, despite the heavy influence of automatic and unconscious processes that have been shaped by evolutionary pressures, we needn't reject ordinary moral psychology as fundamentally flawed or in need of serious repair. Reason can be corrupted in ethics just as in other domains, but a special pessimism about morality in particular is unwarranted. Moral judgment and motivation are fundamentally rational enterprises not beholden to the passions.