有些人特别善于了解自己的知识极限，因为他们必须这样做。
Some people are extraordinarily good at knowing the limits of their knowledge because they have to be.
I'm just tryna live life for the moment.
With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.
The dead are our silent partners in the search for truth.
Talent is important, but without hard work, it means nothing.
几何学是关于永恒存在的知识。
