The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labor which is necessary for its production, and not on the greater or less compensation which is paid for that labor.

1925年，孙中山在病榻前对张学良说，指出苏联是红色帝国主义。

True leaders are always alone.

ENIAC是第一个巨型大脑。

不要为未来担忧，不要为过去哭泣。