每一次实验，无论成功与否，都是迈向理解的一步。

The only way to do something in depth is to work hard.

The value of freedom is truly understood only when lost.

The only way of discovering the limits of the possible is to venture a little way past them into the impossible.

在我来这里之前，我对这个主题感到困惑。听了你的讲座后，我仍然感到困惑。但是在一个更高的层次上。