The idea had been growing in my brain for some time.
6 seconds sound clip from the Taxi Driver (1976) movie soundboard.
You can hear this line at 00:58:57 in the Blu-ray version of the movie.
Quote context
[...]
- There will be no more pills. There will be no more bad food, no more destroyers of my body.
- From now on, it'll be total organization. Every muscle must be tight.
- Wow. Look at the size of that.
- Oh, yeah. Oh, yeah. Oh, it looks so good.
- It's getting harder and harder, and it's throbbing now.
- The idea had been growing in my brain for some time.
- True force. All the king's men cannot put it back together again.
[...]