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

自负指一种以自我的状态。你可以说一个自负的人生活自我陶醉的状态。

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

于，自我迷恋出现时，你只试着驾驭它、享受它，然后就渐渐开始觉得自己骗别人。

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过度贪婪、利己主义或滥用权力——带来危险的政治后果。