【译文】孔子在河边说：“消逝的时光就像这流水一样啊！日日夜夜不停地留去。”

精神生活是对环境的持续调整。

The peculiar evil of silencing the expression of an opinion is that it is robbing the human race； posterity as well as the existing generation； those who dissent from the opinion， still more than those who hold it.

无论你注定要做什么，现在就做。条件总是不可能的。

Understanding nature’s complexity is the ultimate challenge.

The past is a shadow that clings to our heels.

I always tell my kids, 'If you're going to do something, do it well. And if you're not going to do it well, don't do it at all.'

没有自由，美德就无法存在。