统治阶级掌握着物质生产的手段；无产阶级仅有的是他们的劳动力。
The ruling class has the means of material production at its disposal; the proletariat has nothing but their labor power.
Science is the torch that illuminates the world.
定义就是限制。
如果你希望成功，当以恒心为良友、以经验为参谋、以谨慎为兄弟、以希望为哨兵。
股票市场的本质是尽可能多地愚弄人。