计算机是最终的污染者：其粪便与所生产的食物没有区别。
The computer is the ultimate polluter: its feces are indistinguish- able from the food it produces.
The PAC learning framework provides a formal way to analyze the efficiency and effectiveness of learning algorithms.
海洋的健康反映了我们领导力的健康。
我不追求完美，只追求真实。
The past is a ghost, the future a dream, and all we ever have is now.
To build is to take a stand in the world.
改变是不可避免的，而成长是可选的。