Axiology
Axiology (from Greek ἀξία, axia, "value, worth"; and -λογία, -logia) is the philosophical study of value. It is either the collective term for ethics and aesthetics[1], philosophical fields that depend crucially on notions of worth, or the foundation for these fields, and thus similar to value theory and meta-ethics. The term was first used by Paul Lapie, in 1902,[2][3] and Eduard von Hartmann, in 1908.[4][5]