Yet the cause and cure for the mental sickness are still unknown.

但是精神疾病的病因和疗法还是不得而知。

youdao

Hence his whole bodily and mental system will seem to him like an unbearable mass of sickness or a conglomeration of suffering.

由此他的整个身心系统对他来说似乎就像一堆不可忍受的病痛或者苦的集聚。

youdao

But I think I've learned over the years that bigotry can be a kind of mental sickness that tends to influence everything a person does.

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