If I were to advise them that they could extend this period by drinking coffee, I know quite well that some, because it was Satan speaking, would do the exact opposite and refuse coffee entirely, or worse yet, stand on their heads and try pouring it into their asses.
"I am not, in the least, familiar with Death", said the miniaturist.
"We all know Death", said the old man.
"We fear it, but we don't know it."
"Then it falls to you to draw that fear", said the old man.