Mathematics is the most beautiful and most powerful creation of the human spirit.
尝试一种方法是常识。如果失败了,坦率地承认并尝试另一种方法。但最重要的是,尝试一些事情。
Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.
It is personalities, not principles, that move the age.
The boldness of his mind was matched by the candor of his speech.