河水不犯井水: the river water does not intrude into the well water. - - each minds its own business; it's no business of one to mind the business of another.; none may encroach upon the precincts of ano
人不犯我我不犯人: we will not attack unless we are attacked
无人不犯错: there is no man but errs. everybody is possible to made mistakes
不犯千般错误: no man ever became great or good except through many and great mistakes
