每个程序都是其他程序的一部分，很少适合。

Legal rules are not merely commands backed by threats.

I was never afraid of failure; for I would sooner fail than not be among the greatest.

I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.