疾病是生命的阴暗面，一种更沉重的公民身份。每个出生的人都持有双重国籍，在健康王国和疾病王国中。

You are too generous to trifle with me. If your feelings are still what they were last April, tell me so at once. My affections and wishes are unchanged, but one word from you will silence me on this subject forever.

你必须强迫自己考虑相反的观点。特别是当它们挑战你最钟爱的想法时。

史记

真相很少是纯粹的，也从不简单。