"The truth is a mirror, and the mirror is a shadow."
To understand a program you must become both the machine and the program.
Love is the greatest force in the universe.
It is not the creation of wealth that is wrong, but the love of money for its own sake.
The best way to predict the future is to create it.
系统辨识的挑战不仅在于拟合数据,还在于提取有意义且可推广的模型。
Freedom is not merely the opportunity to do as one pleases; neither is it merely the opportunity to choose between set alternatives. Freedom is, first of all, the chance to formulate the available choices, to argue over them—and then, the opportunity to choose.