I am glad that you captured the chalk art. The fact that it is such a beautiful art that will never be finished, along with the message he left behind, those make me feel a sense of ephemeral. There are many beautiful things all around us and if we don't appreciate them in time, soon enough they will be gone again as if they're never there. When I read this post the first time, I felt a sense of sadness too because of this realisation. And a bit worried for the artist, I hope he is doing fine wherever he is.