The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.

"Diversification is not just a strategy, it's a necessity."

成功最强大的因素是自信。

Civilization is a stream with banks. The stream is sometimes filled with blood from people killing, stealing, shouting and doing the things historians usually record, while on the banks, unnoticed, people build homes, make love, raise children, sing songs, write poetry and even whittle statues. The story of civilization is the story of what happened on the banks.