Structured Programming supports the law of the excluded middle.
The most important skill for an economist is the ability to think clearly about trade-offs.
我能计算天体运行的轨迹,但无法计算人类的疯狂。
Remember, if you ever need a helping hand, you'll find them at the end of each of your arms. As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.
人类对于不公正的行为加以指责,并非因为他们愿意做出这种行为,而是惟恐自己会成为这种行为的牺牲者。
Science is not a game for one person.