Three things are necessary for the salvation of man: to know what he ought to believe； to know what he ought to desire； and to know what he ought to do.

I stand up for what I believe in, and I believe in a lot of things.

It is not the benevolence of the employer that determines the wages of labor， but the competition among employers.

在数学中，提出问题的艺术必须比解决问题更有价值。

The quality of an organization is determined by the quality of its leadership.

I think fearless is having fears but jumping anyway.