【大意】把猿猴关在笼子里，它就会像猪一样，并不是它没有灵巧攀登、轻捷跳跃的本领，而是没有它发挥本领的机会。

We are all haunted by the ghosts of our own pasts, and sometimes, by the ghosts of others.

The computing scientist's main challenge is not to get confused by the complexities of his own making.