命题是断言某事是或不是事实的陈述。
A proposition is an assertion that something is or is not the case.
实验室里的秒表,丈量着人类灵魂的振动频率。
The true way is along a rope that is not stretched at any great height but just above the ground. It seems more designed to make people stumble than to be walked upon.
过去是跟随我们的影子,但也是指引我们的光。