充分体认和发挥内心固有的善端。“尽心”是由孟子提出的一种道德修养方法。“尽心”需要发挥心所具有的思考能力，发现人心中固有的善端，并将其作为人之所以为人的本质特征，进而充分培养、发挥心中的善端，最终实现仁、义、礼、智的德行。心中的善端是天赋予人的本性，因此通过“尽心”就能够知晓人的本性，并通达于天。
"Exerting one's mind to the utmost" means one should fully understand and extend one's innate goodness. It is a way of moral cultivation advocated by Mencius. To do so, one needs to develop one's capability of thinking, discover the goodness inherent in the mind and then fully nurture this innate human character, eventually realizing the moral qualities of benevolence, righteousness, rites and social norms, and wisdom.
引例 Citations：
◎孟子曰：“尽其心者，知其性也。知其性，则知天矣。存其心，养其性，所以事天也。”（《孟子·尽心上》）
孟子言：“能做到尽心的人，能知晓其本性。能知晓人的本性，则能够知晓天。保持自己的本心，培养自己的本性，就是对待天命的方法。”
Mencius said, "He who does his utmost knows his nature. Knowing his nature, he knows his inborn moral nature. Preserving his mind and nurturing his nature is the way to deal with his inherent morality." (Mencius)
◎尽心，谓事物之理皆知之而无不尽。（《朱子语类》卷六十）
尽心是指能够知晓事物所具有的理而毫无遗漏。
Exerting one's mind to the utmost means knowing the laws of all things, with nothing left out. (Classified Conversations of Master Zhu Xi)
推荐：教育部 国家语委
供稿：北京外国语大学 外语教学与研究出版社
责任编辑：钱耐安
