The more you know, the more you realize you don't know.
I am not a fast thinker at all. I have to spend a lot of time before I can understand something.
如果你独处时感到寂寞,这说明你没有和你自己成为好朋友。
比光速更快的问题在于你只能生活在黑暗中。
There is no more intrepid a voyager than the philosopher.