The most important part of teaching is to teach what it is to know.
The beauty of mathematics lies in its ability to describe the universe in a language that is both precise and universal.
有些事情即使从未发生过，人们也会记得。
Coal built this country, and coal will keep it strong.
没有行动，思想的花朵永远不会结出果实。
Competition regulates the rate of profit, and profit regulates the rate of accumulation.
The biggest risk is not taking any risk.