Tseng Kuo-Fan
(18111872)
Chinese statesman, general, and scholar
Tseng Kuo-Fan's asthma caused incessant coughing and an inability to work. Diagnosing a yin deficiency, his physician gave him "an excellent prescription, but I really detest medicine and therefore did not take it," Tseng wrote.
Courtesy Prints and Photographs
Division, Library of Congress