The history of life is a history of change.

长期来看，风险与收益相关，但短期内未必如此。

The writer must believe that what he is doing is the most important thing in the world. And he must hold to this illusion even when he knows it is not true.

译文：三国鼎立，孔明的功勋最为卓著，他创制的八卦阵，更是名扬千古。

解释：语言是用来充分表达作者心志的，文采是用来充分发挥语言功能的。