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

是指一种以我为中心状态。你可以说一个人生活我陶醉状态。

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

于是，我迷恋出现时，你只是试着驾驭、享受，就渐渐开始觉得己是欺骗别人。

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

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——带来危险政治果。