To understand a program you must become both the machine and the program.
要了解程序,您必须同时成为机器和程序。
科学的进步不是通过事实的积累,而是通过发现它们之间的新关系。
The best way to predict the future is to invent it.
控制的挑战在于在存在不确定性的情况下使系统工作。