艺术家必须是哲学家、诗人,尤其是革命者。
There is no real excellence in all this world which can be separated from right living.
The world is not a wish-granting factory.
我们生活在一个过去总是存在,未来总是不确定的世界中。
技术可以彻底改变矿业,但前提是我们有勇气接受它。
The study of economics is ultimately the study of human behavior and its consequences.