学习是系统中产生的任何变化，这种变化或多或少会永久性地改变其适应环境的能力。

地球上有黑暗的阴影，但相比之下光明更强大。

全球化战略需要本地化的执行。

"Life, he realize, was much like a song. In the beginning there is mystery, in the end there is confirmation, but it's in the middle where all the emotion resides to make the whole thing worthwhile."

The most powerful weapon you have is your voice.

系统对给定输入的响应是其历史记录的函数。