译文：祸到临头后悔已经来不及了，船驶到江心弥补漏洞已经无济于事。赏析：我们说话做事都要谨慎，凡事都做最坏的打算，要防患于未然才能减少失误和差错。

The pursuit of mathematical knowledge is a journey that never ends; there is always more to discover and understand.

Architecture should be quiet and background, not shouting for attention.

The world is my country, all mankind are my brethren, and to do good is my religion.

最深刻的真理往往是我们忽略的那些。

在数学中，你不理解事物。你只是习惯了它们。

人类留下的痕迹往往是伤痕。