Circular reasoning

Tolerance and diversity, that is, can never of themselves produce tolerance and diversity or work as centrally organizing conceptions or principles precisely because they cannot of their own conceptual resources answer the questions, what will we not tolerate? what kind of diversity is unacceptable? Answering these questions invariably requires recourse to a more comprehensive pattern of thought, one in which tolerance and diversity receive meaning and explication.—World Upside Down, page 166