概率论归根结底不过是常识的微积分化。
The best way to reduce costs is to not have them in the first place.
盈利和可持续性必须齐头并进,否则两者都无法持久。
【解释】积累无数的善行,使得一生无愧于心。
In things indifferent, nothing is preferable to anything else.