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LOGIC
Chapter IV. ETHICS

It is pretty generally admitted that logic is a normative sicent, that is to say, it not only lays down rules which ought to be, but need not be followed; but it is the analysis of the condition of attainment of something of purpose is an essential ingredient. It is, therefore, closely related to an art; from which, however, it differs markedly in that its primary interest lies in understanding those conditions, and only secondarily in aiding the accomplishment of the purpose. Its business is analysis, or, as some writers prefer to say definition.
The word normative was invented in the school of Schleirmacher. The majority of writers who make use of it tell us that there are three normative sciences, Logic, Esthetics, and Ethics, the doctrines of the True, tho Beautiful, and the Good, a trial of ideals which has been recognized since antiquity. on the other hand,