The "Time flies..." quote is commonly ascribed to Groucho Marx.
But, according to QuoteInvestigator.com[0], that is not correct:
QI has traced the core of the quotation to the work of an early researcher in artificial intelligence, Anthony Oettinger, who was trying to get a computer to manipulate the English language.
Which is another interesting detail of artificial intelligence: this attribution is basically the Mandela Effect.
Groucho Marx SHOULD have written that joke. It's good, the punch word is at the end, it's the kind of logic-mocking braintwist Groucho was exceptional at making, and yet he didn't write it. So we ascribe it to him anyway, because that's who SHOULD have written it. Thus is intelligence: we try to make things make sense, and we try to relate things to the big areas of 'sense' we already have in our minds. We have a space for Groucho and for humor, but who's Oettinger and where can we watch his comedy routines? What, he doesn't do comedy routines? And so, sense beats reality…
But, according to QuoteInvestigator.com[0], that is not correct:
QI has traced the core of the quotation to the work of an early researcher in artificial intelligence, Anthony Oettinger, who was trying to get a computer to manipulate the English language.
(Lots more detail at the link[0]).
[0] https://quoteinvestigator.com/2010/05/04/time-flies-arrow/