Cultural relativism is the view that concepts and moral values must be understood in their own cultural context and not judged according to the standards of a different culture. It asserts the equal validity of all points of view and the relative nature of truth, which is determined by an individual or their culture.
The concept was established by anthropologist Franz Boas, who first articulated the idea in 1887: "civilization is not something absolute, but ... is relative, and ... our ideas and conceptions are true only so far as our civilization goes". However, Boas did not use the phrase "cultural relativism". The concept was spread by Boas' students, such as Robert Lowie.