" Are you afraid of that?” they asked. “Of death?” “Of course,” Mosscap said. “All conscious things are. Why else do snakes bite? Why do birds fly away? But that’s part of the lesson too, I think. It’s very odd, isn’t it? The thing every being fears most is the only thing that’s for certain? It seems almost cruel, to have that so…” “So baked in? "

― Becky Chambers , A Psalm for the Wild-Built (Monk & Robot, #1)