The most important political challenge of our time is to create strong, effective, and accountable states.
每首歌都讲述一个故事。
对失败的恐惧会阻碍进步;拥抱风险才能推动有意义的变革。
Sometimes the smallest things take up the most room in your heart.
真正的领导力是创造更多领导者,而不是追随者。
证明的严谨性将数学与所有其他科学区分开来。