The pursuit of mathematical truth is a noble endeavor.

最黑暗的角色往往是那些最能揭示人性本质的角色。

To define is to limit.

The most important object of both the workmen and the management should be the training and development of each individual in the establishment.

没有大胆的猜测，就没有伟大的发现。

我们先养成习惯，然后习惯造就我们。