金银像其他商品一样具有内在价值,这不是任意的,而是取决于它们的稀缺性、获取它们所耗费的劳动量以及生产它们的矿山所投入的资本价值。
Mathematics is the key to unlocking the secrets of the universe and understanding the fundamental laws that govern it.
Have an aim in life,or your energies will all be wasted.
最好的演员是那些能让你忘记他们在演戏的人。