That is the confession of a father.

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

You can hear this line at 01:24:20 in the Blu-ray version of the movie.

Quote context

[...]

- In those days when you were the flower of our school, little did you realise that at your feet lay the heart of this poor child.

- Love had brushed her with his wing, and I, the blind father, I did not understand...

- But since you have been away from us, her sadness almost breaks my heart.

- She stands dreaming by the fireplace.

- She has grown thin, and at last she told me all.

- That is the confession of a father.

- Say nothing you may regret later.

- She's out there waiting now, with anguish in her heart.

- Headmaster, when I asked for your daughter's hand, you threw me out.

- But you did ask for my daughter's hand?

- Yes.

- It's yours.

[...]