verified etymologyzh
學問
學
to learn
問
to ask
learning-and-asking
The word for knowledge is built from 學 (learn) + 問 (ask). You cannot have 學問 without 問 — and to ask you must first own ‘I don't know’. The pretender who can't say 不明 never asks, so never learns, so keeps only the shell. The word already told you the method.
source · 學問 = 學 + 問, a coordinate compound (聯合式複合詞) of two scholarly verbs — word morphology, not 六書 (which describes single characters) — Wiktionary