вроде Конан Дойль, точно не помню. Герой долго сохраняет юношеский облик из за чего у негo траблы, текстуально: very often old gentlemen frowned when I said a good thing (говорил что то фривольное) or drank a second glass of wine
Looks like the quote is "I have observed old gentlemen frown at my precocity when I said a good thing or helped myself to a second glass of wine." from "My Lady Nicotine: A Study in Smoke"