The tears of the world are a constant quantity. For each one who begins to weep, somewhere else another stops. The same is true of the laugh.
A company's culture is defined by the actions of its leaders.
Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.
如果我們不相信我們所鄙視的人的言論自由，那么我們根本就不相信言論自由。
道的根本來源于天，如果天不改變，道也不會改變