其言一也，言者异，则人心变矣。
解释：说同样的话，由于说话的人不同，人们心中的看法也会随之改变。
If we don't believe in freedom of expression for people we despise, we don't believe in it at all.
"The most important thing is to stay agile."
It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be intelligent.
To this day, I have never taken a course anywhere, in chemistry, economics, psychology, or business.
时至今日，我从未在任何地方选修过化学、经济学、心理学或商业课程。