真相很少是纯粹的，也从不简单。
"The truth is rarely pure and never simple."
In the world of computing, the boundary between the possible and the impossible is often defined by the algorithms we can devise.
If a man is proud of his wealth，he should not be praised until it is known how he employs it.
脸上有个污点，别人见了都暗自发笑，而自己还不知道，一旦有人直言相告，马上就用手拭去。如果还说：「我脸上有污点，与你有什么关系？」就不合乎人之常情了。可是当别人指出自身的缺点错误时，人们的态度为何就不是这样呢？