“We have no eternal friends, no eternal enemies, only eternal interests.” --Churchill originated from the 19th century British politician and writer Benjamin Disraeli who said: No Eternal friends, only permanent interests. (A country does not have per-manent friends, only permanent interests.) Later, during World War II, Britain and the Soviet Union reconciled, British Prime Minister Churchill explained.

There are no permanent friends or permanent enemies in the world, only permanent interests. The essence of human interaction is actually the exchange of interests. If you don’t understand the principle of exchange of interests, you will enjoy prosperity today and suffer the consequences tomorrow, and even your amazing talent will be reduced to useless white paper!

Never look down on those who seem vulgar now. After a few years, they may be the most extraordinary people.

If you are too sharp, you will have no food to eat - this is the advice written with blood and brains by the ancestors who have fallen down! Anyone who wants to do great things should practice the skill of "hiding the dew". Be wise when you are wise, and be foolish when you are foolish. When necessary, it is wise to even pretend to be an "imbecile" or a "confused person".