《太平广记·卷三十·神仙三十》
唐玄宗对中贵人高力士说： 我听说成了神仙的人，寒冷和炎热都不能使他的身体生病，外物不污染他的内心。
玄宗谓中贵人高力士曰： 我闻神仙之人，寒燠不能瘵其体，外物不能浼其中。
Emperor Xuanzong said to the senior eunuch Gao Lishi: I heard that people who become immortals will not get sick from cold or heat, and external things will not pollute their hearts.