Never stop learning, because the world never stops changing.

If you just set out to be liked, you would be prepared to compromise on anything at any time, and you would achieve nothing.

统计学中最重要的不是数字，而是产生这些数字的方法及其背后的意义。

变化不仅仅是生活的必要——它就是生活。

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.