Thought is the means by which the organism negotiates its way through the world.
La verdadera pasión no conoce límites ni obstáculos.
The first step in the art of cutting metals is to find a man who has the necessary skill and experience.
Freedom is never voluntarily given by the oppressor； it must be demanded by the oppressed.
没有听到的不如听到的，听到的不如见到的，见到的不如了解到的，了解到的不如去实行，学问到了实行就达到了极点。