You see, I rather like the tune. But unfortunately it completely destroys my authority.

8 seconds sound clip from the Mr. Topaze (1961) movie soundboard.

You can hear this line at 00:26:40 in the Blu-ray version of the movie.

Quote context

[...]

- We are privileged men. Our pupils teach us to be honest, to be sincere, to be...

- One jump ahead of them all the time.

- May I tell you something? You are too soft-hearted. You need more discipline.

- Is it because of my little musician you say that?

- Have you caught him yet?

- Ah, no, not yet.

- You see, I rather like the tune. But unfortunately it completely destroys my authority.

- The next time you hear the music, continue with the lesson as if nothing had happened, then little by little walk towards the sound.

- When you are right up to it, turn sharply, grab the creature from his seat, open the desk, and lo - the musical box.

- Yes, it's quite a good idea, but it's not completely fair, because it's based on deception.

- Well, is your little musician completely fair?

- No, but well, he's only a child.

[...]