Paul Kalanithi said this quote

Often I return to the grave after leaving flowers – tulips, lilies, carnations – to find the heads eaten by deer. It’s just as good a use for the flowers as any, and one Paul would have liked. The earth is quickly turned over by worms, the processes of nature marching on, reminding me of what Paul saw and what I now carry deep in my bones, too: the inextricability of life and death, and the ability to cope, to find meaning despite this, because of this. What happened to Paul was tragic, but he was not a tragedy.