Data tells you what's happening, but only intuition can tell you why.

活着是世界上最罕见的事情。大多数人只是存在，仅此而已。

The true spirit of delight, the exaltation, the sense of being more than Man, which is the touchstone of the highest excellence, is to be found in mathematics as surely as in poetry.

小习惯，大改变。