An essay written by Andrew Carnegie about giving back to society.
The Gospel of Wealth was based on the "trickle-down" idea of rich people giving back to society. Some business owners of the 1800s believed philanthropy was a responsibility of the wealthy and gave things such as universities, libraries and museums. Some, though, saw (or see) it as a despicable way for the elite to relieve themselves from guilt.
This philosophy governed much of Carnegie's and John Rockefeller's giving and could be seen as a counterexample to the growing tide of socialistic discontent among the working class.