Originally published in 1963. In an introductory chapter the author argues that philosophy ought to be more than the art of clarifying thought and that it should concern itself with outlining a scientifically plausible world view. Early chapters deal with phenomenalism and the reality of theoretical entities, and with the relation between the physical and biological sciences. Free will, issues of time and space and man's place in nature are covered in later chapters.

Originally published in 1984, deals with meta-ethics - that is the semantics and pragmatics of ethical language. This book eschews the notions of meaning and analyticity on which meta-ethics normally depends. It discusses questions of free will and responsibility and the relations between ethics on the one hand and science and metaphysics on the other. The author regards ethics as concerned with deciding what to do and with persuading others - not with exploring a supposed realm of ethical fact.

Originally published in 1963. In an introductory chapter the author argues that philosophy ought to be more than the art of clarifying thought and that it should concern itself with outlining a scientifically plausible world view. Early chapters deal with phenomenalism and the reality of theoretical entities, and with the relation between the physical and biological sciences. Free will, issues of time and space and man's place in nature are covered in later chapters.

The issue of whether or not there is a God is one of the oldest and most widely disputed philosophical questions. It is a debate that spreads far across the range of philosophical questions about the status of science, the nature of mind, the character of good and evil, the epistemology of experience and testimony, and so on. In this book two philosophers, each committed to unambiguous versions of belief and disbelief, debate the central issues of atheism and theism. Smart opens the debate by arguing that theism is philosophically untenable and seeks to explain metaphysical truth in the light of total science. Haldane continues the discussion by affirming that the existence of the world, and the possibility of our coming to have knowledge of it, depend upon the existence of a creating, sustaining, personal God. This is followed by replies, where each philosopher has the chance to respond and to defend his position. This second edition contains new essays by each philosopher, responding to criticisms and building on their previous work.

Originally published in 1984, deals with meta-ethics - that is the semantics and pragmatics of ethical language. This book eschews the notions of meaning and analyticity on which meta-ethics normally depends. It discusses questions of free will and responsibility and the relations between ethics on the one hand and science and metaphysics on the other. The author regards ethics as concerned with deciding what to do and with persuading others - not with exploring a supposed realm of ethical fact.

A serious and controversial work in which the authors contribute essays from opposite points of view on utilitarian assumptions, arguments and ideals.