The jaws of power are always open to devour, and her arm is always stretched out, if possible, to destroy the freedom of thinking, speaking, and writing.

子夏说：“每天都学到些新东西，每月都不忘所学会的东西，就算好学了。”

Efficiency is doing things right; effectiveness is doing the right things.

Science is not just about discovery, but about the joy of understanding.

要重生，首先你必须死去。