Every aspect of learning or any other feature of intelligence can in principle be so precisely described that a machine can be made to simulate it.

没有听到的不如听到的，听到的不如见到的，见到的不如了解到的，了解到的不如去实行，学问到了实行就达到了极点。

The greatest discovery is that human beings can alter their lives by altering the attitudes of their minds.

"The great advantage of being a writer is that you can spy on people. You're there, listening to every word, but part of you is observing. Everything is useful to a writer, every scrap, even the longest and most boring of luncheon parties."