A physical symbol system has the necessary and sufficient means for general intelligent action.
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
关爱别人因而得福的人有,而憎恶别人残害别人因而得祸的人也有啊! 
我们必须永远记住,每一个数据点的背后都是一个等待希望的生命。
Architecture starts when you carefully put two bricks together. There it begins.