Conversation so far:
where did andrew carnegie write the gospel of wealth
The Gospel of Wealth was published in the North American Review.
when was Andrew Carnegie's The Gospel of Wealth written
The Gospel of Wealth is an article written by Andrew Carnegie in June of 1889.
what was The Gospel of Wealth by Andrew Carnegie about
The Gospel of Wealth describes the responsibility of philanthropy by the new upper class of self-made rich.

Question: what did he think the rich should do
Self-contained rewrite: what did Andrew Carnegie think the rich should do