But his egomania was largely justified.

然而他的自大是有正当理由为前提的。

Some easterners recently quit the party, complaining of his "vindictive egomania".

最近一些东德人退出该党，抱怨拉方丹“复仇心重”、“自大狂”。

Worse still, I was never able to distinguish his optimism from plain egomania; I would not have been surprised to hear him announce that he had invented a better tree.

更糟的是，我没法辨别，这些究竟是他的乐观主义，或仅仅是狂妄自大而已。所以，即便是他宣布他发明了一种更牛逼的树木，我也不会惊讶。