All things are possible until they are proved impossible and even the impossible may only be so, as of now.
没有什么比独立和自由更宝贵的了。
今天种下的每一棵树都是我们永远不会见到的后代的遗产。
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.