In this verse from "The Epitaph" in "Elegy Written in a Country Churchyard" by Thomas Gray, how is the life of the speaker measured?

The life of the speaker is measured by how rich or famous he is or the lack of it. The poem reveals that the dead speaker was not rich nor famous. But he was an intellectual man despite his humble status. He was also melancholic or depressed probably because of his position in life.