笛卡尔的一个短语。我要出面掩盖。 “so far I have been a spectator in this theatre which is the world, but I am now about to mount the stage, and I come orward masked.” 笛卡尔从一个面具后面说话是在宗教迫害时代。在他推进他的力学机制分析时,同时在大胆讲说的是形而上学。