The opening of I. INTRODUCTION
§ 1. The boundaries of the study called Ethics are variously and often vaguely conceived: but they will perhaps be sufficiently defined, at the outset, for the purposes of the present treatise, if a ‘Method of Ethics’ is explained to mean any rational procedure by which we determine what individual human beings ‘ought’--or what it is ‘right’ for them--to do, or to seek to realise by voluntary action.[9] By using the word “individual” I provisionally distinguish the study of Ethics from that of Politics,[10] which seeks to determine the proper constitution and the right public conduct of governed societies: both Ethics and Politics being, in my view, distinguished from positive sciences by having as their special and primary object to determine what ought to be, and not to ascertain what merely is, has been, or will be.
