"The Dash," a poem by Linda Ellis, can be utilized in several ways in a eulogy. These include quoting or paraphrasing some of it and sharing anecdotes showing how the behavior of the deceased exemplified some of its messages.
Before using material from "The Dash" at the eulogy, you should give some background information about the poem. Note that its main theme focuses on the importance of how one's life is spent (symbolized by the dash on the tombstone), rather than its length (indicated by the dates). According to the poem, being a good person means more than accumulating wealth during the "dash." Also, consider mentioning something about Linda Ellis, the poem's popularity and how it came to be written, as noted on her website, Linda-Ellis.com