The key concepts that define material value-ethics – "material," "value" and "ethics" as the term will be understood in this treatise – are identified. Material value-ethics is phenomenological in its reliance on the method of eidetic intuition developed by Husserl and others. Its "materials" are the value themselves, revealed in acts of eidetic feeling; its ethics is founded in the structured value-manifold revealed and corrected and corrected by the phenomenology of values. From this manifold of values may be derived the three "levels" of moral ratiocination: obligation, virtue, and personalism. Scheler's and Hartmann's independent research in ethics supplement each other in the establishment of a comprehensive material value-ethics, the recovery and criticism of which is the aim of the work. The significance of their parallel critiques of Kant's ethics for material value-ethics is evaluated and a program for the recovery and application of material value-ethics is stated.