处理失败很容易：努力改进。成功也很容易处理：您解决了错误的问题。努力改进。

Make no mistake about it: Computers process numbers - not symbols. We measure our understanding (and control) by the extent to which we can arithmetize an activity.

强大但是骄傲就会削弱力量，弱小而骄傲只会加速灭亡。

We live among myths, and sometimes we don’t even realize it.

做一个犹太人就是做一个见证者。