What is the theme in The Undertaking: Life Studies from the Dismal Trade by Thomas Lynch?

Another theme is the meaning of death. Everyone knows that life is for the living, but Thomas Lynch knows that death is too. While this idea is one theme of the book, Thomas draws out a closely related theme as well. Death is not only about the living, it is about the living in certain important ways. Death is a way for grieving people to let go of pain, psychological baggage, anger and guilt, to be sure. Everyone knows this. But many people miss the important social meaning of death, dying and related events like funerals and wakes.