One ought to avow with the utmost fairness WHAT is still necessary here for a long time, WHAT is alone proper for the present: namely, the collection of material, the comprehensive survey and classification of an immense domain of delicate sentiments of worth, and distinctions of worth, which live, grow, propagate, and perish—and perhaps attempts to give a clear idea of the recurring and more common forms of these living crystallizations—as preparation for a THEORY OF TYPES of morality.