怀瑾握瑜（懷瑾握瑜）　

◎ 怀瑾握瑜 huáijǐn-wòyú

[hold gems in one’s bosom and grasp jades in one’s hand—be in possession of learning and virtue] 瑾、瑜:美玉,喻美德。比喻人具有美玉般的的品德

怀瑾握瑜兮,穷不知所示。——《楚辞·九章·怀沙》