The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all.

领导力就是今天做出艰难的决定，以塑造更美好的明天。

领导力不是发号施令；而是激励人们看到更大的格局。

当一个人做出彻底的蠢事，那通常是出于最高尚的动机。

Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.

可持续性不是终点，而是日常实践。