Hakui, whom Confucius praised as 'an old wise man,' was Shijin who became a recluse, retired from an official position of his own ill, sticking to his principles, and finally starved to death as a result of eating only warabi (a wild vegetable, bracken).
孔子が「古の賢人」と讚えた伯夷は志を貫き、自ら官を退き隠逸し、薇（わらび・ぜんまい）を食べながらついには餓死した士人であった。