来者不善，善者不来

Explanation: To people who are not good, not good to be vigilant 　　Usage: Complex sentence; as predicate, complement, clause; refers to people who are not good, good on 　　Source: Qing Zhao Yi 'Gai I Textual phrase ":"' ill intent, good and not to 'have the' I '' good and not debate, argue those poor 'sentence. " Thesaurus:  Comer bad, Those who do not come good, It should be if the ring, Comer Bad Those who do not come good