"we have not enough before we our dust." Missing a word? Or did you mean "before us?" The rest is lovely.

... wonderful... the words wash over me like a melody.....

"before we our dust"? Should this be "before we are dust"? Otherwise really great write indeed. I love the flow and simplicity as well as the connection of each line to the next. Mortality is something we so often try to rid ourselves of, but time and the rest of the elements never permit us to escape it. You captured that here but not in a cliche. Instead your words are a fresh new take in the thought. Good job.