最好的数学不仅正确,而且具有启发性。
在一切事务中,偶尔将一个问号挂在你长期以来视为理所当然的事物上是一种健康的做法。
You cannot swim for new horizons until you have courage to lose sight of the shore.
The most important single aspect of software development is to be clear about what you are trying to build.