The fundamental impulse that sets and keeps the capitalist engine in motion comes from the new consumers' goods, the new methods of production or transportation, the new markets, the new forms of industrial organization that capitalist enterprise creates.

I don't believe in over-diversification. I prefer to focus on a few good ideas.

坚持是数学研究的关键，许多伟大的成果来自于长期的奋斗。

——在柏林墙演说

Technology itself is neither good nor evil, the key lies in the people who use it.