The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.
世界的整个问题在于愚蠢的人和狂热分子总是对自己如此确定,而聪明的人则充满疑虑。
在股票中赚钱的关键是不要被吓跑。
The study of automata and formal languages is fundamental to understanding the limits of computation.