Every mathematical problem has a solution; it just takes time and effort to find it.

The dead are our silent collaborators in the quest for knowledge.

最慢的工艺往往比最快的时尚更持久。

It seems to me that if you or I must choose between two courses of thought or action, we should remember our dying and try so to live that our death brings no pleasure to the world.

人很容易被自己的利益驱使，仅仅让他看到正确是不够的，还必须让他感受到它。