《国语·晋语·里克杀奚齐而秦立惠公》
埋葬故世的国君，奉养继位的国君，对死而复生的不觉得后悔，对活着的不感到惭愧，这叫做贞。 
葬死者，养生者，死人复生不悔，生人不愧，贞也。 
To bury the former lord and serve the succeeding lord, not regretting the dead nor feeling shame towards the living - this is called integrity.