The mathematician does not study pure mathematics because it is useful; he studies it because he delights in it and he delights in it because it is beautiful.
La gloire ne peut être où la vertu n'est pas.
法律是一种强制秩序。
Failure is the best teacher. You learn by making mistakes and figuring out how to correct them.
因害怕文字狱而避开，著书只是为了谋生。