I don't know how to explain it, but whenever Dorian poses for me, it seems as if a power outside myself were guiding my hand.

7 seconds sound clip from the The Picture of Dorian Gray movie soundboard.

You can hear this line at 00:05:04.487 in the Blu-ray version of the movie.

Quote context

[...]

- Being natural is simply a pose and the most irritating pose I know.

- But you haven't answered my question. I want to know the real reason why you won't exhibit Dorian Gray's picture.

- There is really very little to tell, Harry. Besides, I'm afraid you will hardly believe it.

- I can believe anything provided that it is quite incredible.

- I'm afraid this will seem so.

- There is something I can't quite understand. Something mystic about it.

- Mystic?

- I don't know how to explain it, but whenever Dorian poses for me, it seems as if a power outside myself were guiding my hand.

- It's as if the painting had a life of its own, independent of me.

- That's why I'm not going to exhibit it.

- It belongs rightfully to Dorian Gray, and I shall give it to him.

- I want to meet this extraordinary young man. I think we shall be friends.

[...]