who has given the concept of radical humanism
M. N. Roy In the aftermath of World War II Roy moved away from Marxism to espouse the philosophy of radical humanism, attempting to chart a third course between liberalism and communism.
Cultural relativism It was James Lawrence Wray-Miller who provided an additional clarification tool, or caveat as some would call it, of cultural relativism's theoretical underpinnings by dividing it into two binary, analytical continuums: vertical and horizontal cultural relativism. Ultimately, these two analytical continuums share the same basic conclusion: that human morality and ethics are not static but fluid and vary across cultures depending on the time period and current condition of any particular culture.