The habit of searching for the positive in everything will transform your life.
寻找一切事物中积极面的习惯会改变你的生活。
领导力就是做出今天艰难的决定，造福下一代。
A mathematician's work is mostly a solitary pursuit, but it is also deeply collaborative.
可持续性不是一种趋势，而是我们对下一代的责任。