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Read each question, and then choose the best answer.
Read the following passages, and answer the questions about each one.
Medicine: The Healing Science
In no other field of study are the observer and the observed able to understand each other so well. The story of medicine is a never-ending tale of mankind’s journey of self-discovery. On the walls of the Temple of Delphi is the Greek precept, "Know thyself "—and no more exciting or worthwhile pursuit is available to man. From its beginnings, medicine sought not only to ameliorate the hurt or to cure the disease, but, more significantly, to attain a real understanding of its most mysterious and complex subject—the human animal.
The astronomer is not a planet; the geologist treads upon the earth yet is separate from it. But the physician who gazes upon and studies his patient looks at himself. After all, what doctor has never felt ill or has always been free of pain or guilt? Both doctor and patient are essentially living laboratories, separated only by the knowledge and the social role of the former.
The best summary of this passage is that