我整洁、干净、刮了胡子、清醒，而且我不在乎谁知道。
I was neat, clean, shaved and sober, and I didn't care who knew it.
统计学是从数据中学习的科学。
The greatest economic transformations often begin with small, deliberate steps.
敢于求知！要有勇气运用你自己的理智。