在数学中,提出问题的艺术必须比解决问题更有价值。
Virtue is more to be feared than vice, because its excesses are not subject to the regulation of conscience.
Profitability and sustainability are not opposites - they're two sides of the same coin.
I'm the reason your stars won't twinkle.
"The world is a book, and those who do not travel read only one page."
"The profession of book writing makes horse racing seem like a solid, stable business."