The biographer's challenge is to be both a detective and a poet.

Every mathematical problem has a solution; sometimes it just takes time to find it.

写小说的困难在于完成它。

人生起落无常，低谷时别放弃。  

Success comes from focusing on what truly matters and letting go of the rest.

Educate the children， and it won't be necessary to punish men.

当你关注长期价值而非短期收益时，成功就会到来。