What describes Andrew Carnegie and philosophy that is the duty of the rich to use their wealth for the common good?

Andrew Carnegie believed in the concept of philanthropy and that it was the duty of the rich to use their wealth to benefit society through charitable giving. This philosophy is often summarized as "the Gospel of Wealth," where wealthy individuals have a responsibility to use their resources to improve the welfare of others and support social progress. Carnegie himself exemplified this belief through his extensive philanthropic efforts, such as funding libraries, schools, and other public institutions.