当一个问题被清晰地陈述时，它就已经解决了一半。

It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all.

Truth is eternal, knowledge is changeable.

如果你没有失败，说明你不够努力。

我们能体验到的最美丽的东西是神秘的。