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 materials we choose today become the legacy we leave tomorrow.
You must be the change you wish to see in the world.
解析：经常反省检查自己，不给私欲留空间。
不要害怕放弃好的，去追求伟大的。
