The most important thing is to keep the audience engaged.

The past is a foreign country; they do things differently there.

Innovation is not the goal; solving problems is.

我不是商人，我就是生意本身！

用心体会整理才能理解精确得当，所以应当沉着稳重，不然就成了口头耳边的小事，过后就忘了。事理要以典故为依据，因此必须学识广博，否则就成了随意推测，胡编乱造。