发现现象原因或真实假设的艺术，如同破译的艺术，其中巧妙的猜想常缩短道路。

幸福就是珍惜小事。

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.

可持续性不仅仅是种树；而是种下能成长为行动的想法。