You think you know when you can learn, are more sure when you can write, even more when you can teach, but certain when you can program.

Around computers it is difficult to find the correct unit of time to measure progress. Some cathedrals took a century to complete. Can you imagine the grandeur and scope of a program that would take as long?

The difference between ordinary and extraordinary is that little extra.

想要得富贵福泽，这要看天意，由不得自己；要想成为贤人君子，主要靠自己，由不得天意。