The main idea of what Carnegie is saying is that among the ways to dispose of surplus wealth, administering it for the common good is the most beneficial.
In the passage, Carnegie states that there are 3 ways to dispose of surplus wealth:
Carnegie states that among these ways to dispose of excess wealth, administering the money in ways that are for public purposes is the most beneficial, to the most amount of people. He implies that the alternative of scattering excess wealth among the few, over the course of many years in small amounts would not have a long-lasting benefit and therefore not be a way in which the community can make long lasting progress, he refers to this as "the elevation of our race".
Carnegie lists the modes in which excess wealth can be disposed of, then explains his opinion that administering the wealth for public purposes, whose benefit will be received by the masses, is the most effective way to reach an ideal state.
For more on Carnegie visit:
https://brainly.com/question/12543442?referrer=searchResults