Because the "expensive gas" of the noble is not expensive, but angry. This "habit" is a person's excellent quality and accomplishment formed through long-term edification.
That is: seeing the world, calmly and calmly; When dealing with people, the attitude and tolerance of humiliation and burden, and so on. Therefore, no amount of money can buy expensive gas.
Some people, although rich, are rich, but they feel vulgar. On the contrary, some people, although their lives are temporarily embarrassed, show dignity in their gestures, and the "extravagance" in their brow can't be hidden even if they want to.