Tonight, once more, we can all sleep peacefully in our beds, secure in the knowledge that, as I assured my small son Harold, just eight years old, Yes, Harold, I said. There is a Batman... and Robin the Boy Wonder.
17 seconds sound clip from Batman (1966) - Batman Is Riled (S1E6) TV Series.
You can hear this line at 00:23:19 in the Blu-ray version of the movie.
Quote context
[...]
- It's back to prison walls for you, Joker.
- Ba-a-a!
- I'm afraid you're under arrest, ma'am.
- Couldn't we talk it over, handsome?
- So with The Joker's capture, Gotham City's worst crime wave in history has come to an end.
- After a word from our sponsor, Fred will be back with more news of The Joker.
- It's time for your piano lesson, Dick.
- Aw, gee, Aunt Harriet, I wanna hear about The Joker.
[...]