This is a four-character aphorism from my Dictionary of Korean Idioms.
一字無識
일자 무식
il.ja.mu.sik
one-letter-not-know
“ignoramus” / “dumb as a doornail”
I think I need to know this. I don’t know why.
I feel like I’m getting dumber as I get older.
[daily log: walking in the China Smog, 6km]