For 500 years it poisoned his mind.
6 seconds sound clip from the The Lord of the Rings: The Fellowship of the Ring movie soundboard.
You can hear this line at 00:06:29 in the Blu-ray version of the movie.
Quote context
[...]
- It came to me. My own. My love. My own. My precious.
- The Ring brought to Gollum unnatural long life.
- For 500 years it poisoned his mind.
- And in the gloom of Gollum's cave, it waited.
- Darkness crept back into the forests of the world.
- Rumor grew of a shadow in the East whispers of a nameless fear.
- And the Ring of Power perceived its time had now come.
[...]