数学的美在于它揭示隐藏的对称性和真理的能力。
Digital exclusion is one of the greatest inequalities of our time.
The whole of life is an act of letting go, but what hurts the most is not taking a moment to say goodbye.
奥运会上最重要的不是胜利,而是参与;人生中最重要的不是征服,而是奋力拼搏。