Egomania is the state of being egocentric. You could say an egomaniac lives in the state of egomania.

自负是指一种以自我为中心。可以说一个自负人生活自我陶醉。

So you just try to ride the egomania when it comes and enjoy it, and then slide through the idea of fraud.

于是，自我迷恋出现，是试着驾驭它、享受它，然后就渐渐开始觉得自己是欺骗别人。

Yet inevitably the public spirit degenerates into excessive greed, egomania or the abuse of power—with dangerous political consequences.

然而，公共精神不可避免地会退化为过度贪婪、利己主义或滥用权力——带来危险政治后果。