- There's no such thing as a good influence, Mr. Gray. All influence is immoral.
- Why?
- Because the aim of life is self-development. To realize one's nature perfectly.

Lord Henry Wotton (George Sanders)

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

You can hear this line at 00:07:20.672 in the Blu-ray version of the movie.

Quote context

[...]

- You don't really mind, do you, Basil? You often told me you liked your sitters to have someone to chat to.

- Sit down then, Harry.

- Now, Dorian, get up on the platform and don't pay any attention to what Lord Henry says.

- He has a bad influence over his friends, with the single exception of myself.

- Have you really a bad influence, Lord Henry?

- There's no such thing as a good influence, Mr. Gray. All influence is immoral.

- Why?

- Because the aim of life is self-development. To realize one's nature perfectly.

- That's what we're here for.

- A man should live out his life fully and completely, give form to every feeling, expression to every thought, reality to every dream.

- Every impulse that we suppress broods in the mind and poisons us.

- There's only one way to get rid of a temptation and that's to yield to it. Resist it and the soul grows sick with longing for the things it has forbidden to itself.

[...]