“The first sign of senility is that a man forgets his theorems, the second sign is that he forgets to zip up, the third sign is that he forgets to zip down.”
- #wikiquote
- #saying
- #undated
- #lang:en
“The first sign of senility is that a man forgets his theorems, the second sign is that he forgets to zip up, the third sign is that he forgets to zip down.”
Captured 2026-08-17 from Wikiquote (en). The archived copy is preserved so this citation survives link rot.