It's time I return to the topic of memento mori, no? Billy Collins has [at least] twice taken up the "Memento Mori" title/topic. "There is no need for me to keep a skull on my desk, to stand with one foot up on the ruins of Rome, or wear a locket with the sliver of a saint’s bone. It is enough to realize that every common object in this sunny little room will outlive me– the carpet, ...