Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
数学不知道种族或地理边界；对于数学来说，文化世界是一个国家。
使意念沉稳，任何事理都能通达；有志发愤图强，任何难事都能成功。
The historian is both detective and storyteller.
We must stop just talking about change and start acting.
The way we communicate with others and with ourselves ultimately determines the quality of our lives.
注意是意识的聚光灯。