It's because their expertise was being unvalued.

这是因为他们的专业知识没有得到重视。

No minister need come; nor need anything be said over me. --I tell you I have nearly attained my heaven; and that of others is altogether unvalued and uncovered by me.

需来；也需对我念叨些什么。——我告诉你我快到达我的天堂了；别人的天堂在我是毫无价值的，我也希罕。"