天将降大任于斯人，必先苦其心志
So it is that whenever Heaven invests a person with great responsibilities, it first tries his resolve, exhausts his muscles and bones, starves his body, leaves him destitute, and confounds his every endeavor. In this way his patience and endurance are developed, and his weakness are overcome.
“天将降大任于斯人也，必先苦其心志，劳其筋骨，饿其体肤，空乏其身，行拂乱其所为，所以动心忍性，增益其所不能。”
句 孟子