A man who knows why he lives can endure any kind of life.
The highest knowledge is the knowledge of the self.
It is not the criminal things that are hardest to confess， but the ridiculous and shameful things.
——曾问母亲，母亲说：“种种事情都完了！死完结了一切，文。”
国家财富的增长主要取决于生产力的提高。