He'd been teaching the same rubbish for 30 years and I don't suppose he'd read a new book for 20 of those.
6 seconds sound clip from the The Curse of Frankenstein movie soundboard.
You can hear this line at 00:05:52.154 in the Blu-ray version of the movie.
Quote context
[...]
- Perhaps you'd better start from the beginning.
- Where did it all begin? I suppose it was when I was a boy at school.
- I always had a brilliant intellect.
- That old fool who used to teach us may have been able to hoodwink the others, but what did he know?
- Victor, dear boy you are the sole remaining member of the Frankenstein family.
- I shall do my best, Uncle. Thank you.
- Goodbye.
[...]