Mengzi (BC372~289),born in Zouyi,Shandong,is a thinker in Warring States Period.
He developed and applied the Confucious kindheartness into policy of benevolence.He was admired as Mencius by later generations.
Mencius owns the idea that everyone,since he was born,possess the moral principles that make people become perfect,i.e.Ren (mercy),Yi (moral),Li (etiquette),Zhi (wisdom).And their future develoopment depends on future education and environment.