夫柽柏之断也,大者为之栋梁,小者为之椽桁,直者中绳,曲者中钩,随材而适,未有可弃者。是以君子善能拔士,故无弃人。· When trees are felled,the big ones will be taken as ridgepoles; the small ones,rafters; the straight timbers,straight articles; the bent branches,curved articles. All are utilized according to their different qualities without any rejects.Similarly,a skilful ruler will promote talented people according to their different capabilities,leaving no one unused.
(Liu Zhou [of Northern Qi in the Northern Dynasties]: The Works of Liuzi)