The investor's chief problem - and even his worst enemy - is likely to be himself.
The P versus NP problem is one of the most important unsolved problems in computer science.
孔子说:“不要担心没有地位,要注意做人的立场;不要怕没人了解自己,要想法使自己容易得到理解。”
"The writer's duty is to disturb the peace, to unsettle the comfortable, and to comfort the unsettled."