学习数学的最好方法就是做数学。
Investing is not about beating the market; it's about achieving your financial goals.
The great cause of the prosperity of the country is liberty—liberty in the economic system.
"Books, which we mistake for consolation, only add depth to our sorrow."
The proper study of psychology is the prediction and control of behavior.
表演的挑战是让观众忘记他们正在观看一场表演。
Innovation is not about technology, it's about mindset.