One of my favorite quotes concerning the knowledge of our mortality comes from the theologian Martin Heidegger. “Our knowledge that we must die is the background music that plays faintly in the distance all during our lives; At times we blot it out, but there are other times when it swells in volume and tempo, and we cannot be unaware of it.”I can find that quote on other inspirational web pages, but nowhere in the GA. It's likely a paraphrase. Does anyone know the source?