书籍是灵魂的镜子,反映我们最深的恐惧和欲望。
Mathematics is the foundation upon which all sciences are built.
No one is altogether to be blamed for the defects of his nature; but he is blameworthy if he takes no pains to correct them.  
在远处防守不如在近处防守,把守太繁琐不如把守要塞,用常法把守不如用出奇制胜的方法,把守宽阔的地方不如把守狭窄的地方,在深处把守不如在浅处把守。