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

我不需要理由去为自己骄傲。

We are not in the coffee business serving people, we are in the people business serving coffee.

要求被爱是一切傲慢中最狂妄的。

统计学家不能逃避责任，必须清楚地理解科学推断的原则。