"Impermanence is swift." (Dogen) Alive in the morning, dead at night. Heute rot, morgen tot.
Gotama the Buddha: "Decay is inherent in all composite things! Work out your salvation with diligence!" (Supposedly, the Tathagata’s last words.)
Plato: "nothing which is subject to change…has any truth" (Phaedo St 83).
Aurelius Augustinus: "Things that are not immutable are not at all."
How many of the 58 or so slain began the day with the thought: This day may be my last? Were they ready to embark?