How weary, stale,flat and unprofitable seem to me all the uses of this world!

虚心和实腹的义理都很深奥，但首先要通过虚心才能认识本心。

The smart way to keep people passive and obedient is to strictly limit the spectrum of acceptable opinion, but allow very lively debate within that spectrum.

你已经足够好了，就做你自己。