To understand a program you must become both the machine and the program.
要理解一个程序,你必须同时成为机器和程序。
研究的坚持是关键;自然只向有耐心的人揭示它的秘密。
You don't learn to walk by following rules. You learn by doing, and by falling over.
The devil doesn’t need horns to be dangerous.