<boily> le/rn \xc3\xb6rjan/\xc3\x96rjan is the di\xc3\xa6resed twin. He will punctuate your v\xc3\xb6\xe1\xba\x85\xc3\xabls, and maybe a few other unsuspecting letters.

#!/bin/sh
topic=$(echo "$1" | tr A-Z a-z)
[ -e "wisdom/$topic" ] || { echo "$1? ¯\(°_o)/¯"; exit 1; }
cat "wisdom/$topic"