接口可以使事情保持整洁，但不能加速增长：函数可以做到。
The night is a mirror, and it shows you what you’re afraid of.
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.
Positive emotions broaden our awareness and allow us to see more possibilities.