善恶之间的界限常常模糊不清，我们需要自己去辨别。

The method of psychology must be as exact as the methods of the natural sciences.

Over the centuries the Indians developed sign language for communicating phenomena of interest. Programmers from different tribes (FORTRAN, LISP, ALGOL, SNOBOL, etc.) could use one that doesn't require them to carry a blackboard on their ponies.

真正的奢华在于那些大多数人第一眼甚至注意不到的细节。