有时候最勇敢的事就是在一切似乎都失去时继续前进。

The value and utility of any experiment are determined by the fitness of the material to the purpose for which it is used.

A picture is a fact.

文字是唯一永恒的东西；其他一切都会消亡。

The key to trading success is to be patient and disciplined.

凡是教师缺乏爱的地方，无论品格还是智慧都不能充分地或自由地发展。